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Patents
Office Supplies; Artists And Teachers Materials Patents
Teaching Material Patents
Demonstrator Or Exhibitor (10) Patents
Movable Indicator Or Changeable Exhibitor Patents (Class D19/64)
Movable Indicator Or Changeable Exhibitor Patents (Class D19/64)
Controlled reluctance microphone display
Patent number:
D242856
Type:
Grant
Filed:
October 15, 1974
Date of Patent:
December 28, 1976
Inventor:
Jack N. Holcomb
Battery charging cycle educational board
Patent number:
D243085
Type:
Grant
Filed:
October 15, 1974
Date of Patent:
January 18, 1977
Inventor:
Jack N. Holcomb
Battery comparator educational board
Patent number:
D243847
Type:
Grant
Filed:
October 15, 1974
Date of Patent:
March 29, 1977
Inventor:
Jack N. Holcomb
Machine for teaching the manner in which a clock indicates time
Patent number:
D243950
Type:
Grant
Filed:
November 24, 1975
Date of Patent:
April 5, 1977
Assignee:
Tomy Kogyo Co. Inc.
Inventor:
Toyotsugu Ogasawara
Educational toy clock
Patent number:
D245505
Type:
Grant
Filed:
September 2, 1975
Date of Patent:
August 23, 1977
Inventor:
Maynard J. Bullock
Educational aid
Patent number:
D246374
Type:
Grant
Filed:
February 19, 1976
Date of Patent:
November 15, 1977
Inventors:
Dorothy L. Ratcliff, Ford Ratcliff, Jr.
Drawing toy
Patent number:
D250491
Type:
Grant
Filed:
June 9, 1976
Date of Patent:
December 5, 1978
Assignee:
Takara Co., Ltd.
Inventor:
Iwakichi Ogawa
Semaphoric educative toy
Patent number:
D251731
Type:
Grant
Filed:
May 2, 1977
Date of Patent:
May 1, 1979
Inventor:
Bernard Bertrand
Teaching aid figure
Patent number:
D254857
Type:
Grant
Filed:
January 5, 1978
Date of Patent:
April 29, 1980
Inventor:
Kenneth W. Ehle
Educational clock apparatus
Patent number:
D256807
Type:
Grant
Filed:
October 10, 1978
Date of Patent:
September 9, 1980
Inventor:
Diane McLean
Wrist-wearable time teaching instrument
Patent number:
D261532
Type:
Grant
Filed:
November 2, 1979
Date of Patent:
October 27, 1981
Assignee:
Tomy Kogyo Co., Inc.
Inventor:
Toshinori Tabata
Mathematical aid
Patent number:
D262892
Type:
Grant
Filed:
July 2, 1979
Date of Patent:
February 2, 1982
Inventor:
Burton S. Heiko
Solar energy demonstrator
Patent number:
D264480
Type:
Grant
Filed:
July 14, 1980
Date of Patent:
May 18, 1982
Assignee:
Aero Systems Research, Inc.
Inventor:
Gaylord B. Buck
Indicator for classroom control and education
Patent number:
D265100
Type:
Grant
Filed:
October 4, 1979
Date of Patent:
June 22, 1982
Inventor:
Ruth R. Oettinger
Writing guide
Patent number:
D266857
Type:
Grant
Filed:
September 22, 1980
Date of Patent:
November 9, 1982
Inventor:
James C. Greenlees
Children's clock
Patent number:
D268686
Type:
Grant
Filed:
September 22, 1980
Date of Patent:
April 19, 1983
Assignee:
VDO Adolf Schindling AG
Inventor:
Dieter Wolf
Teaching clock
Patent number:
D269790
Type:
Grant
Filed:
March 31, 1981
Date of Patent:
July 19, 1983
Inventor:
Frank Alessio
Children's educational clock
Patent number:
D269977
Type:
Grant
Filed:
May 7, 1981
Date of Patent:
August 2, 1983
Inventor:
Jurgen Gopfert
Circular slide chart
Patent number:
D270844
Type:
Grant
Filed:
December 1, 1980
Date of Patent:
October 4, 1983
Inventor:
Janette K. McIntyre
Visualization disc for selecting elements of display stands
Patent number:
D271778
Type:
Grant
Filed:
August 28, 1981
Date of Patent:
December 13, 1983
Assignees:
Applications Industrielles et Artistiques des Matieres Plastiques Apia, Formtechnik, Pop Crafts
Inventors:
Pierre H. G. Mabille, Yannick A. R. Perrin
Teaching clock
Patent number:
D273873
Type:
Grant
Filed:
July 13, 1981
Date of Patent:
May 15, 1984
Inventor:
Frank Alessio
Set of blocks for a children's clock
Patent number:
D275405
Type:
Grant
Filed:
January 5, 1982
Date of Patent:
September 4, 1984
Assignee:
VDO Adolf Schindling AG
Inventor:
Dieter Wolf
Music scale
Patent number:
D276443
Type:
Grant
Filed:
June 24, 1982
Date of Patent:
November 20, 1984
Inventor:
John Sperti
Circular slide rule
Patent number:
D277108
Type:
Grant
Filed:
September 30, 1982
Date of Patent:
January 8, 1985
Inventor:
Lynn Lundquist
Child's clock figure toy
Patent number:
D281334
Type:
Grant
Filed:
May 2, 1983
Date of Patent:
November 12, 1985
Assignee:
Hestair Kiddicraft Limited
Inventor:
Peter G. Adams
Spelling game educational unit
Patent number:
D284775
Type:
Grant
Filed:
October 17, 1983
Date of Patent:
July 22, 1986
Inventor:
Joseph S. Akiyama
Cocktail composer guide
Patent number:
D293336
Type:
Grant
Filed:
December 11, 1984
Date of Patent:
December 22, 1987
Inventor:
Paul A. Fenner
Question and answer cube
Patent number:
D294714
Type:
Grant
Filed:
August 5, 1985
Date of Patent:
March 15, 1988
Inventor:
David W. Johnson
Combined educational game spinner and blocks therefor
Patent number:
D294837
Type:
Grant
Filed:
June 7, 1985
Date of Patent:
March 22, 1988
Inventor:
Martha L. Haines
Fabric/wood matching wheel
Patent number:
D295191
Type:
Grant
Filed:
April 30, 1985
Date of Patent:
April 12, 1988
Assignee:
Plycraft Inc.
Inventor:
Paul R. Goldman
Wall clock
Patent number:
D297512
Type:
Grant
Filed:
January 28, 1987
Date of Patent:
September 6, 1988
Assignee:
Spartus Corporation
Inventors:
Alexander Kowalenko, Janice L. Latimer
World time zone indicator/calculator
Patent number:
D298837
Type:
Grant
Filed:
October 9, 1985
Date of Patent:
December 6, 1988
Inventor:
Robert J. Thomas
Novelty management decision spinner
Patent number:
D299662
Type:
Grant
Filed:
June 11, 1985
Date of Patent:
January 31, 1989
Inventor:
Don R. Cobb
Calculator
Patent number:
D300539
Type:
Grant
Filed:
August 7, 1987
Date of Patent:
April 4, 1989
Assignee:
Joseph Leeb Enterprises
Inventor:
Robert Wong
Educational clock
Patent number:
D301308
Type:
Grant
Filed:
April 14, 1986
Date of Patent:
May 30, 1989
Inventor:
Deborah S. Ray
Teaching clock
Patent number:
D306611
Type:
Grant
Filed:
December 11, 1986
Date of Patent:
March 13, 1990
Assignee:
Educational Insights, Inc.
Inventors:
Brian Hills, Dennis J. Graham, Burton Cutler
Display stand for encouraging children to brush their teeth
Patent number:
D311425
Type:
Grant
Filed:
March 15, 1988
Date of Patent:
October 16, 1990
Inventor:
Tom E. Lindsay
Dated holder for maintaining and displaying lesson planning cards
Patent number:
D316107
Type:
Grant
Filed:
April 17, 1989
Date of Patent:
April 9, 1991
Inventor:
Vivian S. Lockner
Learning apparatus for evaluating and developing human resource and organizational skills
Patent number:
D318689
Type:
Grant
Filed:
July 27, 1988
Date of Patent:
July 30, 1991
Assignee:
Interel, Inc.
Inventor:
Boyd G. Watkins
Card board for memory or the like
Patent number:
D321722
Type:
Grant
Filed:
October 27, 1989
Date of Patent:
November 19, 1991
Assignee:
Special Press, Inc.
Inventors:
Nancy Helm-Estabrooks, Edith Kaplan
Calculating device
Patent number:
D321906
Type:
Grant
Filed:
November 20, 1989
Date of Patent:
November 26, 1991
Inventor:
Marilyn J. Neeley
Mathematical educational device
Patent number:
D322812
Type:
Grant
Filed:
November 13, 1989
Date of Patent:
December 31, 1991
Assignees:
Alec S. Harwin, Taylor M. Harwin
Inventor:
Joan D. Harwin
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