Darrell N. Chelcun

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Buffalo Grove, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Control system for switching loads on zero crossing
- Patent number 5,838,077
- Issue date Nov 17, 1998
- Pittway Corporation
- Darrell N. Chelcun
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Liquid crystal display module having housing of C-shaped cross section
- Patent number 4,958,911
- Issue date Sep 25, 1990
- Jonand, Inc.
- John L. Beiswenger
- G02 - OPTICS