Pencil Sharpener Patents (Class D19/73)
Crank type (Class D19/74)
  • Combined pencil sharpener and catch box
    Patent number: D243764
    Type: Grant
    Filed: August 4, 1975
    Date of Patent: March 22, 1977
    Inventor: Werner Mobius
  • Cordless electric pencil sharpener
    Patent number: D244604
    Type: Grant
    Filed: December 31, 1975
    Date of Patent: June 7, 1977
    Assignee: Esquire Trading Co., Ltd.
    Inventor: Yoshiro Ohta
  • Pencil sharpener
    Patent number: D249152
    Type: Grant
    Filed: February 7, 1977
    Date of Patent: August 29, 1978
    Assignee: Ketcham & McDougall, Inc.
    Inventor: William Macowski
  • Electric pencil sharpener
    Patent number: D250035
    Type: Grant
    Filed: February 24, 1977
    Date of Patent: October 24, 1978
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Daisuke Kajiwara
  • Electric pencil sharpener
    Patent number: D251008
    Type: Grant
    Filed: May 4, 1977
    Date of Patent: February 6, 1979
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Daisuke Kajiwara
  • Pencil sharpener
    Patent number: D251976
    Type: Grant
    Filed: May 18, 1977
    Date of Patent: May 29, 1979
    Assignee: Playme, S.A.
    Inventor: Manuel Mate Balmes
  • Dual cosmetic pencil sharpener
    Patent number: D251977
    Type: Grant
    Filed: October 28, 1977
    Date of Patent: May 29, 1979
    Assignee: Koh-I-Noor Rapidograph, Inc.
    Inventors: John P. Leuenberger, Paul B. Gloe
  • Pencil sharpener
    Patent number: D252883
    Type: Grant
    Filed: May 18, 1977
    Date of Patent: September 11, 1979
    Assignee: Playme, S.A.
    Inventor: Manuel Mate Balmes
  • Pencil sharpener
    Patent number: D252884
    Type: Grant
    Filed: May 18, 1977
    Date of Patent: September 11, 1979
    Assignee: Playme, S.A.
    Inventor: Manuel Mate Balmes
  • Pencil sharpener
    Patent number: D252885
    Type: Grant
    Filed: May 18, 1977
    Date of Patent: September 11, 1979
    Assignee: Playme, S.A.
    Inventor: Manuel Mate Balmes
  • Pencil sharpener
    Patent number: D254858
    Type: Grant
    Filed: February 23, 1978
    Date of Patent: April 29, 1980
    Inventor: Werner Mobius
  • Pencil sharpener
    Patent number: D254914
    Type: Grant
    Filed: February 23, 1978
    Date of Patent: May 6, 1980
    Inventor: Werner Mobius
  • Pencil sharpener
    Patent number: D254978
    Type: Grant
    Filed: February 23, 1978
    Date of Patent: May 13, 1980
    Inventor: Werner Mobius
  • Pencil sharpener
    Patent number: D255127
    Type: Grant
    Filed: February 23, 1978
    Date of Patent: May 27, 1980
    Inventor: Werner Mobius
  • Cosmetic pencil sharpener
    Patent number: D262295
    Type: Grant
    Filed: November 3, 1978
    Date of Patent: December 15, 1981
    Inventor: Lowell Kaye
  • Pencil sharpener
    Patent number: D265323
    Type: Grant
    Filed: September 4, 1980
    Date of Patent: July 6, 1982
    Assignee: Ketcham & McDougall, Inc.
    Inventor: William Macowski
  • Disposable receptacle for a pencil sharpener
    Patent number: D284391
    Type: Grant
    Filed: May 26, 1983
    Date of Patent: June 24, 1986
    Inventor: Kenneth S. Obenski
  • Pencil sharpener
    Patent number: D297438
    Type: Grant
    Filed: February 24, 1986
    Date of Patent: August 30, 1988
    Assignee: Eldon Industries, Inc.
    Inventor: Mel Evenson
  • Cordless pencil sharpener
    Patent number: D298340
    Type: Grant
    Filed: August 13, 1985
    Date of Patent: November 1, 1988
    Assignee: John Manufacturing Limited
    Inventor: John S. Yuen
  • Pencil sharpener
    Patent number: D298840
    Type: Grant
    Filed: June 24, 1985
    Date of Patent: December 6, 1988
    Assignee: Ketcham & McDougall, Inc.
    Inventor: William Macowski