Richard R. Koehn

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Prior Lake, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Strand chair for supporting prestressing cable and cross-mesh in el...
- Patent number 4,644,727
- Issue date Feb 24, 1987
- Fabcon, Inc.
- David W. Hanson
- E04 - BUILDING
Information Patent Grant
Machine for casting concrete members
- Patent number 4,457,682
- Issue date Jul 3, 1984
- Fabcon, Inc.
- Richard C. Nash
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Device for lifting and tilting concrete panels
- Patent number 4,398,761
- Issue date Aug 16, 1983
- Fabcon, Incorporated
- David W. Hanson
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Machine for casting concrete members
- Patent number 4,369,153
- Issue date Jan 18, 1983
- Fabcon, Inc.
- Richard C. Nash
- B28 - WORKING CEMENT, CLAY, OR STONE