Patents by Inventor Louis L. Mastro

Louis L. Mastro 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).

  • Panel meter
    Patent number: D270338
    Type: Grant
    Filed: February 13, 1981
    Date of Patent: August 30, 1983
    Assignee: Square D Company
    Inventors: Richard A. Heck, Louis L. Mastro
  • Outdoor electrical receptacle cover
    Patent number: D273557
    Type: Grant
    Filed: November 16, 1981
    Date of Patent: April 24, 1984
    Assignee: Square D. Company
    Inventors: Louis L. Mastro, William C. Traylor
  • Weatherproof cover for electrical outlet or the like
    Patent number: D275173
    Type: Grant
    Filed: December 18, 1981
    Date of Patent: August 21, 1984
    Assignee: Square D Company
    Inventors: Louis L. Mastro, William C. Traylor
  • Heater front cover
    Patent number: D285830
    Type: Grant
    Filed: August 31, 1983
    Date of Patent: September 23, 1986
    Assignee: Square D Company
    Inventors: Terrill A. Daily, Louis L. Mastro
  • Combination telephone handset and keyboard console base
    Patent number: D293236
    Type: Grant
    Filed: October 26, 1984
    Date of Patent: December 15, 1987
    Assignee: Square D Company
    Inventors: Louis L. Mastro, Robert L. Demick
  • Smoke detector
    Patent number: D297316
    Type: Grant
    Filed: August 1, 1986
    Date of Patent: August 23, 1988
    Assignee: Square D Company
    Inventor: Louis L. Mastro
  • Talking smoke detector
    Patent number: D311348
    Type: Grant
    Filed: August 12, 1988
    Date of Patent: October 16, 1990
    Assignee: Pioneer Data Corporation
    Inventors: Louis L. Mastro, Kenneth R. Parker
  • Dishwasher front panel
    Patent number: D320487
    Type: Grant
    Filed: March 1, 1989
    Date of Patent: October 1, 1991
    Assignee: Whirlpool Corporation
    Inventors: Larry D. Marks, Richard C. Stiles, Louis L. Mastro, Curtis J. Bailey
  • Dishwasher front panel
    Patent number: D320489
    Type: Grant
    Filed: March 1, 1989
    Date of Patent: October 1, 1991
    Assignee: Whirlpool Corporation
    Inventors: Larry D. Marks, Richard C. Stiles, Louis L. Mastro, Curtis J. Bailey