William J. Lautzenheiser

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North Billerica, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
System for test sequence annunciation
- Patent number 4,412,211
- Issue date Oct 25, 1983
- American District Telegraph Co.
- William J. Lautzenheiser
- G08 - SIGNALLING
Information Patent Grant
Anti-bridging cable supervision circuit
- Patent number 4,369,436
- Issue date Jan 18, 1983
- American District Telegraph Company
- William J. Lautzenheiser
- G08 - SIGNALLING