P

Inventor

ZELENZ MARTIN L

US10 patents
⚠️ This page may combine multiple inventors who share the name “ZELENZ MARTIN L”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

TRESNESS IRREVOCABLE PATENT TR

4 patents
US5745838AApr 28, 1998

Return path filter

TRESNESS IRREVOCABLE PATENT TR93 citations94
US6323743B1Nov 27, 2001

Electronic filter assembly

TRESNESS IRREVOCABLE PATENT TR34 citations90
US5999796ADec 7, 1999

Return path attenuation filter

TRESNESS IRREVOCABLE PATENT TR21 citations90
US8022785B2Sep 20, 2011

Step attenuator circuit with improved insertion loss

TRESNESS IRREVOCABLE PATENT TR7 citations82

TRESNESS ANDREW F

3 patents
USRE34720ESep 6, 1994

Television signal enhancement and scrambling system

TRESNESS ANDREW F5 citations72
US5157362AOct 20, 1992

Narrow band notch filter with extended passband

TRESNESS ANDREW F15 citations72
US5022078AJun 4, 1991

Television signal enhancement and scrambling system

TRESNESS ANDREW F12 citations72

ARROW COMM LAB INC

1 patent
US6888423B2May 3, 2005

Electronic filter assembly

ARROW COMM LAB INC18 citations87

PHILIPS CORP

1 patent
US4222066ASep 9, 1980

CATV Subscription service control device and attenuator therefor

PHILIPS CORP23 citations81

REGENCY ELECTRONICS

1 patent
US4590519AMay 20, 1986

Television signal scrambling/descrambling system

REGENCY ELECTRONICS12 citations72