Robert L. Propst

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Redmond, WA, US

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Patents Grantslast 30 patents

Information Patent Grant
Floor system
- Patent number 5,333,423
- Issue date Aug 2, 1994
- Robert L. Propst
- E04 - BUILDING
Information Patent Grant
Building enclosure system
- Patent number 5,090,170
- Issue date Feb 25, 1992
- Robert L. Propst
- E04 - BUILDING
Information Patent Grant
Building enclosure system and method
- Patent number 5,012,625
- Issue date May 7, 1991
- Robert L. Propst
- E04 - BUILDING
Information Patent Grant
Building enclosure system and method
- Patent number 4,899,510
- Issue date Feb 13, 1990
- Robert L. Propst
- E04 - BUILDING