Inventor · disambiguated record
Richard R. Koehn
Also filed as: KOEHN RICHARD R
5 granted patents·133 citations·filing 1981–1986
83Inventor score
Files withFABCON INC5
Top patents by PatentIndex Score
5 records- 0192USD272517SCombination lift insert and weld plate for use in hollow core concrete planksFABCON INC·Filed 1981·Granted Feb 7, 1984·43 cites·1 claims
- 0272US4644727AStrand chair for supporting prestressing cable and cross-mesh in elongated precast concrete plankFABCON INC·Filed 1986·Granted Feb 24, 1987·38 cites·8 claims
- 0364US4457682AMachine for casting concrete membersFABCON INC·Filed 1983·Granted Jul 3, 1984·20 cites·2 claims
- 0461US4369153AMachine for casting concrete membersFABCON INC·Filed 1981·Granted Jan 18, 1983·18 cites·15 claims
- 0559US4398761ADevice for lifting and tilting concrete panelsFABCON INC·Filed 1981·Granted Aug 16, 1983·14 cites·23 claims
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