Sherman B. Frederick

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New Hope, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Sweeper conveyor overflow and leakage recycling ramp
- Patent number 6,192,542
- Issue date Feb 27, 2001
- Tennant Company
- Sherman B. Frederick
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Sweeper with speed control for brush and vacuum fan
- Patent number 4,615,070
- Issue date Oct 7, 1986
- Tennant Company
- Sherman B. Frederick
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Surface maintenance equipment
- Patent number 4,373,227
- Issue date Feb 15, 1983
- Tennant Company
- Paul W. Kimzey
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES