James E. Yehl

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Boulder, CO, US

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Patents Grantslast 30 patents

Information Patent Grant
Surface cleaning apparatus and method
- Patent number 5,187,635
- Issue date Feb 16, 1993
- American Environmental Systems, Inc.
- James E. Yehl
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Apparatus and method for selective environmental conditioning of su...
- Patent number 5,043,840
- Issue date Aug 27, 1991
- American Environmental Systems, Inc.
- James E. Yehl
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Apparatus and method for establishing selected environmental charac...
- Patent number 5,010,777
- Issue date Apr 30, 1991
- American Environmental Systems, Inc.
- James E. Yehl
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Apparatus and method for environmental modification
- Patent number 4,911,737
- Issue date Mar 27, 1990
- American Environmental Systems, Inc.
- James E. Yehl
- B60 - VEHICLES IN GENERAL