Gary D. Lehnhardt — 9 Patents at Construction Forms

Gary D. Lehnhardt has been granted 9 US patents while listed as an inventor at Construction Forms. The first was granted in 1989 and the most recent in July 2005. Gary D. Lehnhardt ranks #535,341 of 4,157,543 US inventors in our database (top 12.9%). Patent records list Gary D. Lehnhardt in Belgium, WI, US.

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Showing 1–9 of 9 patents

Patent #	Title	Co-Inventors	Date
6913041	Tapered boom hose	Rolando Altamirano	2005-07-05
6871832	Fiberglass, reinforced concrete hose shut-off valve	Gordon Guslick, Rolando Altamirano, Gerald Biever, James H. Larson	2005-03-29
6817591	Concrete hose shut-off valve	Gordon Guslick	2004-11-16
6766570	Coupling units connecting tubular members having a hardened inner wall for carrying mechanically abrasive fluid concrete	Robert E. Klemm	2004-07-27
6758500	Flared ends conduit coupling	—	2004-07-06
6467812	Pipe having replaceable wear resistant lined coupler	Robert E. Klemm	2002-10-22
6375228	Coupling units connecting tubular members having a hardened inner wall for carrying mechanically abrasive fluid concrete	Robert E. Klemm	2002-04-23
5379805	Single solid thin wall pipe for abrasive material having a gradual transition in hardness	Robert E. Klemm	1995-01-10
4796814	Semi-liquid cementitious spray nozzle apparatus	Robert E. Klemm	1989-01-10

Gary D. Lehnhardt — 9 Patents

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