Inventor

MASON JOHN W

US3 patents

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

VALCOM INC

2 patents

US5229925AJul 20, 1993

Modular front panel and enclosure for electronic apparatus

VALCOM INC129 citations94

US6944312B2Sep 13, 2005

Lay-in ceiling speaker

VALCOM INC89 citations89

MASON JOHN W

1 patent

US4177358ADec 4, 1979

Tone dial toll restrictor

MASON JOHN W8 citations65