Patents Represented by Law Firm 1
  • Underwater navigation device
    Patent number: 5187871
    Abstract: A navigation device for personal use includes a face mask with a transparent window for binocular vision when the device is worn by the user. The face mask has a directional indicator attachement with a multiplicity of symbols to identify the directional orientation of the mask. The directional indicator is attached at a stable location and distance for continuous availability of direct binocular viewing.
    Type: Grant
    Filed: January 27, 1992
    Date of Patent: February 23, 1993
    Inventor: Damien McDermott
  • Substituted 7,8-dihydro-6H-(1,2,5)thiadiazolo(3',4'-5,6)pyrazino(2,3-b)(1,4)oxazines
    Patent number: 4080499
    Abstract: Substituted 7,8-dihydro-6H-(1,2,5)thiadiazolo(3',4'-5,6)pyrazino(2,3-b)(1,4)oxazine compounds useful as herbicides or fungicides are disclosed.
    Type: Grant
    Filed: December 20, 1976
    Date of Patent: March 21, 1978
    Assignee: 1
    Inventor: Thomas J. Dietsche