Patents by Inventor Logan W. Johnson

Logan W. Johnson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4238097
    Abstract: A conductor's chair, podium and stand wherein a podium has a flat standing area at a relatively low level and both the chair and stand have a plurality of generally horizontally-extending legs with certain of the legs having a greater length to underlie and balance the off-center weight of the chair and stand, respectively, and with the longer legs being positionable under the podium to bring the chair and stand relatively close together and with minimal leg exposure beyond the perimeter of the podium. The chair and stand are of separable parts with interengaging sections which may be assembled in only one relation to assure stability in use.
    Type: Grant
    Filed: February 17, 1978
    Date of Patent: December 9, 1980
    Assignee: Wenger Corporation
    Inventors: Herman A. Clausen, David R. Boeddeker, Logan W. Johnson, Jerry A. Wenger
  • Patent number: D246140
    Type: Grant
    Filed: February 6, 1976
    Date of Patent: October 18, 1977
    Assignee: Magnetic Controls Company
    Inventor: Logan W. Johnson
  • Patent number: D247814
    Type: Grant
    Filed: February 2, 1976
    Date of Patent: May 2, 1978
    Assignee: Clark Equipment Company
    Inventors: Logan W. Johnson, James L. Werner
  • Patent number: D251088
    Type: Grant
    Filed: June 17, 1977
    Date of Patent: February 13, 1979
    Assignee: Clark Equipment Company
    Inventors: Logan W. Johnson, John W. Henline, Joseph M. Mather, James J. Bauer
  • Patent number: D254556
    Type: Grant
    Filed: July 24, 1978
    Date of Patent: March 25, 1980
    Assignee: Minnesota Mining & Manufacturing Company
    Inventor: Logan W. Johnson
  • Patent number: D257756
    Type: Grant
    Filed: March 13, 1979
    Date of Patent: January 6, 1981
    Inventor: Logan W. Johnson
  • Patent number: D263361
    Type: Grant
    Filed: December 10, 1979
    Date of Patent: March 16, 1982
    Assignee: Wenger Corporation
    Inventors: Logan W. Johnson, Jerry A. Wenger, Wayne V. Tenner
  • Patent number: D264779
    Type: Grant
    Filed: July 30, 1979
    Date of Patent: June 8, 1982
    Assignee: Wenger Corporation
    Inventors: Jerry A. Wenger, Darrel E. Newell, Harvey M. Urch, Logan W. Johnson
  • Patent number: D273622
    Type: Grant
    Filed: September 10, 1982
    Date of Patent: April 24, 1984
    Assignee: Tennant Company
    Inventors: Neil F. Brown, Roger D. Star, Logan W. Johnson
  • Patent number: D278133
    Type: Grant
    Filed: August 5, 1982
    Date of Patent: March 26, 1985
    Assignee: Rosemount Inc.
    Inventor: Logan W. Johnson
  • Patent number: D282746
    Type: Grant
    Filed: December 27, 1982
    Date of Patent: February 25, 1986
    Assignee: Zycad Corporation
    Inventors: Logan W. Johnson, Richard E. Carlson, Michael E. McCadden, Richard E. Offerdahl, Nicholas P. Van Brunt
  • Patent number: D288478
    Type: Grant
    Filed: June 21, 1984
    Date of Patent: February 24, 1987
    Assignee: SenTech Medical Corporation
    Inventors: Scott W. Carlson, Walter L. Sembrowich, Mark B. Knudson, Richard L. Little, Ronald E. Eibensteiner, Logan W. Johnson, Roger L. Funk
  • Patent number: D289180
    Type: Grant
    Filed: July 14, 1986
    Date of Patent: April 7, 1987
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Dennis L. Crawford, Logan W. Johnson
  • Patent number: D292401
    Type: Grant
    Filed: September 27, 1985
    Date of Patent: October 20, 1987
    Assignee: Rosemount Inc.
    Inventors: David W. Lee, Logan W. Johnson
  • Patent number: D294733
    Type: Grant
    Filed: January 23, 1985
    Date of Patent: March 15, 1988
    Assignee: Pharmacia Deltec, Inc.
    Inventors: Lyle V. Peterson, Logan W. Johnson