Patents by Inventor Melvin H. Boldt

Melvin H. Boldt 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: 4491872
    Abstract: An ultra-compact projection television receiver is disclosed comprising cabinet means for enclosing the components of the receiver. The receiver has vertically arranged elevatable rear projection screen means selectively storable in the receiver. Means are included for elevating the screen means from a first receiver-inoperable position wherein the screen means is stored in the cabinet and the receiver is substantially as compact as a conventional large-screen console television receiver. In a second, elevated receiver-operable position, the screen means is emerged from the cabinet and is capable of displaying an image with an area greater than three times the image area on a conventional console television receiver.
    Type: Grant
    Filed: January 17, 1983
    Date of Patent: January 1, 1985
    Assignee: Zenith Electronics Corporation
    Inventors: Melvin H. Boldt, James W. Schwartz
  • Patent number: D254769
    Type: Grant
    Filed: April 10, 1978
    Date of Patent: April 22, 1980
    Assignee: National Presto Industries, Inc.
    Inventors: Melvin H. Boldt, Thurber H. Morrison, James P. Stevens
  • Patent number: D255008
    Type: Grant
    Filed: October 3, 1977
    Date of Patent: May 20, 1980
    Assignee: National Presto Industries, Inc.
    Inventors: Melvin H. Boldt, Thurber H. Morrison, Robert W. Becker
  • Patent number: D256019
    Type: Grant
    Filed: April 10, 1978
    Date of Patent: July 22, 1980
    Assignee: National Presto Industries, Inc.
    Inventors: Melvin H. Boldt, Thurber H. Morrison, Wayne J. Franek
  • Patent number: D256357
    Type: Grant
    Filed: November 1, 1977
    Date of Patent: August 12, 1980
    Assignee: Rowe International, Inc.
    Inventor: Melvin H. Boldt
  • Patent number: D260765
    Type: Grant
    Filed: August 21, 1978
    Date of Patent: September 15, 1981
    Assignee: Rowe International, Inc.
    Inventor: Melvin H. Boldt
  • Patent number: D261594
    Type: Grant
    Filed: March 5, 1979
    Date of Patent: November 3, 1981
    Assignee: National Presto Industries, Inc.
    Inventors: Melvin H. Boldt, Thurber H. Morrison, Francis J. Greb
  • Patent number: D262018
    Type: Grant
    Filed: May 30, 1980
    Date of Patent: November 24, 1981
    Assignee: Rowe International, Inc.
    Inventor: Melvin H. Boldt
  • Patent number: D266423
    Type: Grant
    Filed: February 2, 1981
    Date of Patent: October 5, 1982
    Assignee: Zenith Radio Corporation
    Inventors: Melvin H. Boldt, David P. Chuboff, Clement W. Trottier, Robert E. Slater
  • Patent number: D266668
    Type: Grant
    Filed: February 2, 1981
    Date of Patent: October 26, 1982
    Assignee: Zenith Radio Corporation
    Inventors: Melvin H. Boldt, David P. Chuboff, Clement W. Trottier, Robert E. Slater
  • Patent number: D267424
    Type: Grant
    Filed: July 18, 1980
    Date of Patent: December 28, 1982
    Assignee: National Presto Industries, Inc.
    Inventors: Melvin H. Boldt, Thurber H. Morrison, Robert W. Becker, Robert S. Huff
  • Patent number: D267851
    Type: Grant
    Filed: October 14, 1980
    Date of Patent: February 8, 1983
    Assignee: Amana Refrigeration, Inc.
    Inventors: Melvin H. Boldt, James P. Stevens, Chester J. Wojtowicz
  • Patent number: D268417
    Type: Grant
    Filed: April 20, 1981
    Date of Patent: March 29, 1983
    Assignee: Bausch & Lomb Incorporated
    Inventors: Melvin H. Boldt, Nanette M. Schoenrock
  • Patent number: D268758
    Type: Grant
    Filed: May 28, 1981
    Date of Patent: April 26, 1983
    Assignee: Zenith Radio Corporation
    Inventors: Melvin H. Boldt, David P. Chuboff, Wayne J. Franek, Marilyn M. Johnson
  • Patent number: D270157
    Type: Grant
    Filed: June 22, 1981
    Date of Patent: August 16, 1983
    Assignee: Zenith Radio Corporation
    Inventors: Melvin H. Boldt, David P. Chuboff, Wayne J. Franek, Marilyn M. Johnson
  • Patent number: D270354
    Type: Grant
    Filed: September 4, 1980
    Date of Patent: August 30, 1983
    Assignee: Bausch & Lomb Incorporated
    Inventors: Melvin H. Boldt, David P. Chuboff, Tom Takeuchi
  • Patent number: D271132
    Type: Grant
    Filed: April 8, 1981
    Date of Patent: October 25, 1983
    Assignee: National Presto Industries, Inc.
    Inventors: Melvin H. Boldt, Thurber H. Morrison, Robert W. Becker, Robert S. Huff
  • Patent number: D275029
    Type: Grant
    Filed: June 2, 1980
    Date of Patent: August 7, 1984
    Assignee: National Presto Industries, Inc.
    Inventors: Melvin H. Boldt, Thurber H. Morrison, James P. Stevens
  • Patent number: D275952
    Type: Grant
    Filed: March 1, 1982
    Date of Patent: October 16, 1984
    Assignee: Zenith Radio Corporation
    Inventors: Melvin H. Boldt, deceased, by Melvin W. Boldt, executor, David P. Chuboff, Wayne J. Franek
  • Patent number: D275953
    Type: Grant
    Filed: March 1, 1982
    Date of Patent: October 16, 1984
    Assignee: Zenith Radio Corporation
    Inventors: Melvin H. Boldt, deceased, by Melvin W. Boldt, executor, David P. Chuboff, Arnold Goldman, Wayne J. Franek