William E. Abel

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Portland, OR, US

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Patents Grantslast 30 patents

Information Patent Grant
Lens arrangement for intrusion detection device
- Patent number 5,311,024
- Issue date May 10, 1994
- Sentrol, Inc.
- Douglas H. Marman
- G08 - SIGNALLING
Information Patent Grant
Self-powered sensor for use in closed-loop security system
- Patent number RE33807
- Issue date Jan 28, 1992
- Sentrol, Inc.
- William E. Abel
- 340 - Communications: electrical
Information Patent Grant
Glass break detector
- Patent number 4,837,558
- Issue date Jun 6, 1989
- Sentrol, Inc.
- William E. Abel
- G08 - SIGNALLING
Information Patent Grant
Self-powered sensor for use in closed-loop security system
- Patent number 4,745,398
- Issue date May 17, 1988
- Sentrol, Inc.
- William E. Abel
- G08 - SIGNALLING
Information Patent Grant
Moisture detector
- Patent number 4,692,752
- Issue date Sep 8, 1987
- Sentrol, Inc.
- William E. Abel
- G08 - SIGNALLING
Information Patent Grant
Supervised wireless security system
- Patent number 4,661,804
- Issue date Apr 28, 1987
- Sentrol, Inc.
- William E. Abel
- G08 - SIGNALLING
Information Patent Grant
Supervised wireless security system
- Patent number 4,523,184
- Issue date Jun 11, 1985
- Sentrol, Inc.
- William E. Abel
- G08 - SIGNALLING