Donald O. Baehr

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Arlington Heights, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Method for the production of glass fiber-reinforced gypsum sheets a...
- Patent number 4,265,979
- Issue date May 5, 1981
- United States Gypsum Company
- Donald O. Baehr
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Method for the production of glass fiber-reinforced gypsum sheets a...
- Patent number 4,233,368
- Issue date Nov 11, 1980
- United States Gypsum Company
- Donald O. Baehr
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Contouring gypsum articles
- Patent number 4,150,083
- Issue date Apr 17, 1979
- United States Gypsum Company
- Donald O. Baehr
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Fire resistant doors
- Patent number 3,987,600
- Issue date Oct 26, 1976
- United States Gypsum Company
- Donald O. Baehr
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS