Thomas B. Harsch

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Stow, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Multiplexing circuit for liquid crystal display
- Patent number 4,042,920
- Issue date Aug 16, 1977
- Hoffmann-La Roche Inc.
- Thomas B. Harsch
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Electro-optic welding helmet lens assembly
- Patent number 4,039,803
- Issue date Aug 2, 1977
- Mack Gordon
- Thomas B. Harsch
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Electro-optic welding lens assembly using multiple liquid crystal l...
- Patent number 4,039,254
- Issue date Aug 2, 1977
- Gordon; Mack
- Thomas B. Harsch
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Surface alignment method for liquid crystal cells and production of...
- Patent number 3,941,901
- Issue date Mar 2, 1976
- Hoffmann-La Roche Inc.
- Thomas B. Harsch
- G02 - OPTICS