Patents by Inventor Leonardus A. C. Krol

Leonardus A. C. Krol 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).

  • Lighting fixture
    Patent number: D292026
    Type: Grant
    Filed: September 16, 1985
    Date of Patent: September 22, 1987
    Assignee: U.S. Philips Corporation
    Inventor: Leonardus A. C. Krol
  • Base for a lighting fixture
    Patent number: D292322
    Type: Grant
    Filed: September 16, 1985
    Date of Patent: October 13, 1987
    Assignee: U.S. Philips Corporation
    Inventor: Leonardus A. C. Krol
  • Adjustable spotlight
    Patent number: D297373
    Type: Grant
    Filed: September 15, 1986
    Date of Patent: August 23, 1988
    Assignee: U.S. Philips Corporation
    Inventors: Stefanus F. W. Joosten, Leonardus A. C. Krol
  • Night-light
    Patent number: D302863
    Type: Grant
    Filed: December 19, 1986
    Date of Patent: August 15, 1989
    Assignee: U.S. Philips Corporation
    Inventor: Leonardus A. C. Krol
  • Torch
    Patent number: D311776
    Type: Grant
    Filed: October 3, 1988
    Date of Patent: October 30, 1990
    Assignee: U.S. Philips Corporation
    Inventor: Leonardus A. C. Krol
  • Torch
    Patent number: D311779
    Type: Grant
    Filed: October 3, 1988
    Date of Patent: October 30, 1990
    Assignee: U.S. Philips Corporation
    Inventor: Leonardus A. C. Krol
  • Torch
    Patent number: D312508
    Type: Grant
    Filed: October 3, 1988
    Date of Patent: November 27, 1990
    Assignee: U.S. Philips Corporation
    Inventor: Leonardus A. C. Krol
  • Torch
    Patent number: D312702
    Type: Grant
    Filed: October 3, 1988
    Date of Patent: December 4, 1990
    Assignee: U.S. Philips Corporation
    Inventor: Leonardus A. C. Krol
  • Torch
    Patent number: D316455
    Type: Grant
    Filed: October 3, 1988
    Date of Patent: April 23, 1991
    Assignee: U.S. Philips Corporation
    Inventor: Leonardus A. C. Krol