Gordon; Mack

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Cleveland, OH, US

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Patents Grantslast 30 patents

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

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