Daniel J. Birk

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Aurora, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Modular electronic timer switch system
- Patent number 4,922,407
- Issue date May 1, 1990
- Pittway Corporation
- Daniel J. Birk
- G05 - CONTROLLING REGULATING
Information Patent Grant
Test initiation apparatus with continuous or pulse input
- Patent number 4,901,056
- Issue date Feb 13, 1990
- Pittway Corporation
- Nicholas J. Bellavia
- G08 - SIGNALLING
Information Patent Grant
Test initiation apparatus with continuous or pulse input
- Patent number 4,827,244
- Issue date May 2, 1989
- Pittway Corporation
- Nicholas J. Bellavia
- G08 - SIGNALLING