Issued Patents All Time
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 |