Patents by Inventor Clifford E. Grube

Clifford E. Grube 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: 4671300
    Abstract: An ashtray for eliminating emitted smoke is disclosed. The ashtray defines, within its housing, a predetermined, fixed filter region. An air filter is positioned within and confined by the filter region to ensure that substantially all air passes through the filter medium of the air filter.
    Type: Grant
    Filed: January 13, 1984
    Date of Patent: June 9, 1987
    Assignee: Associated Mills, Inc.
    Inventors: Clifford E. Grube, William Kalnins
  • Patent number: 4580582
    Abstract: An ashtray for eliminating emitted smoke is disclosed. The ashtray defines, within its housing, a predetermined, fixed filter region. An air filter is positioned within and confined by the filter region to ensure that substantially all air passes through the filter medium of the air filter.
    Type: Grant
    Filed: July 27, 1984
    Date of Patent: April 8, 1986
    Assignee: Associated Mills, Inc.
    Inventors: Clifford E. Grube, William Kalnins
  • Patent number: 4159714
    Abstract: An improved footstool has a heating element and a vibrating element in a cushion and adapts for use in a plurality of configurations. The cushion is releasably fastened to a base of the footstool for use alone, and the legs of the footstool retract for use of the footstool in an inclined position as well as an upright position.
    Type: Grant
    Filed: November 29, 1977
    Date of Patent: July 3, 1979
    Assignee: Associated Mills, Inc.
    Inventors: Samuel F. Peterson, Clifford E. Grube
  • Patent number: D245855
    Type: Grant
    Filed: November 15, 1976
    Date of Patent: September 20, 1977
    Assignee: Associated Mills, Inc.
    Inventor: Clifford E. Grube
  • Patent number: D245857
    Type: Grant
    Filed: October 18, 1976
    Date of Patent: September 20, 1977
    Assignee: Associated Mills, Inc.
    Inventor: Clifford E. Grube
  • Patent number: D245858
    Type: Grant
    Filed: November 15, 1976
    Date of Patent: September 20, 1977
    Assignee: Associated Mills, Inc.
    Inventor: Clifford E. Grube
  • Patent number: D246081
    Type: Grant
    Filed: November 26, 1976
    Date of Patent: October 18, 1977
    Assignee: Associated Mills, Inc.
    Inventor: Clifford E. Grube
  • Patent number: D248666
    Type: Grant
    Filed: March 24, 1976
    Date of Patent: July 25, 1978
    Assignee: Associated Mills, Inc.
    Inventor: Clifford E. Grube
  • Patent number: D250835
    Type: Grant
    Filed: August 17, 1977
    Date of Patent: January 16, 1979
    Assignee: Associated Mills, Inc.
    Inventor: Clifford E. Grube
  • Patent number: D251045
    Type: Grant
    Filed: March 9, 1977
    Date of Patent: February 13, 1979
    Assignee: Associated Mills, Inc.
    Inventor: Clifford E. Grube
  • Patent number: D253790
    Type: Grant
    Filed: August 17, 1977
    Date of Patent: December 25, 1979
    Assignee: Associated Mills, Inc.
    Inventor: Clifford E. Grube
  • Patent number: D255626
    Type: Grant
    Filed: July 26, 1977
    Date of Patent: July 1, 1980
    Assignee: Associated Mills, Inc.
    Inventor: Clifford E. Grube
  • Patent number: D260430
    Type: Grant
    Filed: December 4, 1978
    Date of Patent: August 25, 1981
    Assignee: Associated Mills, Inc.
    Inventor: Clifford E. Grube
  • Patent number: D263439
    Type: Grant
    Filed: September 27, 1979
    Date of Patent: March 23, 1982
    Assignee: Associated Mills, Inc.
    Inventor: Clifford E. Grube
  • Patent number: D266102
    Type: Grant
    Filed: November 30, 1979
    Date of Patent: September 7, 1982
    Assignee: Associated Mills, Inc.
    Inventor: Clifford E. Grube
  • Patent number: D266532
    Type: Grant
    Filed: May 27, 1980
    Date of Patent: October 12, 1982
    Assignee: Associated Mills, Inc.
    Inventor: Clifford E. Grube
  • Patent number: D274645
    Type: Grant
    Filed: June 28, 1982
    Date of Patent: July 10, 1984
    Assignee: Associated Mills, Inc.
    Inventor: Clifford E. Grube
  • Patent number: D277305
    Type: Grant
    Filed: July 15, 1982
    Date of Patent: January 22, 1985
    Assignee: Associated Mills, Inc.
    Inventor: Clifford E. Grube
  • Patent number: D280555
    Type: Grant
    Filed: August 10, 1983
    Date of Patent: September 10, 1985
    Assignee: Associated Mills, Inc.
    Inventor: Clifford E. Grube
  • Patent number: D281618
    Type: Grant
    Filed: August 19, 1983
    Date of Patent: December 3, 1985
    Assignee: Associated Mills, Inc.
    Inventor: Clifford E. Grube