Steven L. Fritsche

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Mundelein, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for determining the uncovered size of an openi...
- Patent number 5,170,673
- Issue date Dec 15, 1992
- Landis & Gyr Powers, Inc.
- Osman Ahmed
- B08 - CLEANING
Information Patent Grant
Apparatus for controlling the ventilation of laboratory fume hoods
- Patent number 5,092,227
- Issue date Mar 3, 1992
- Landis & Gyr Powers, Inc.
- Osman Ahmed
- B08 - CLEANING