Martin L. Zelenz

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Fayetteville, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Step attenuator circuit with improved insertion loss
- Patent number 8,022,785
- Issue date Sep 20, 2011
- Arcom Digital, LLC
- Martin L Zelenz
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Electronic filter assembly
- Patent number 6,888,423
- Issue date May 3, 2005
- Arrow Communication Laboratories, Inc.
- Andrew F. Tresness
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Electronic filter assembly
- Patent number 6,323,743
- Issue date Nov 27, 2001
- Tresness Irrevocable Patent Trust
- Martin L. Zelenz
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Return path attenuation filter
- Patent number 5,999,796
- Issue date Dec 7, 1999
- Tresness Irrevocable Patent Trust
- Andrew F. Tresness
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Return path filter
- Patent number 5,745,838
- Issue date Apr 28, 1998
- Tresness Irrevocable Patent Trust
- Andrew F. Tresness
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Narrow band notch filter with extended passband
- Patent number 5,157,362
- Issue date Oct 20, 1992
- Tresness; Andrew F.
- Martin L. Zelenz
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Television signal enhancement and scrambling system
- Patent number 5,022,078
- Issue date Jun 4, 1991
- Tresness; Andrew F.
- Martin L. Zelenz
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Step attenuator circuit with improved insertion loss
- Publication number 20100134206
- Publication date Jun 3, 2010
- Martin L. Zelenz
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Electronic filter assembly
- Publication number 20040104788
- Publication date Jun 3, 2004
- Andrew F. Tresness
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Electronic filter assembly
- Publication number 20030117235
- Publication date Jun 26, 2003
- Eagle Comtronics, Inc.
- Michael Lamb
- H03 - BASIC ELECTRONIC CIRCUITRY