Inventor

MACDONALD HUGH

US3 patents

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

PERSONICS CORP

2 patents

US4937807AJun 26, 1990

System for encoding sound recordings for high-density storage and high-speed transfers

PERSONICS CORP343 citations95

US4811325AMar 7, 1989

High-speed reproduction facility for audio programs

PERSONICS CORP332 citations93

TEMPLOK INC

1 patent

US8052178B2Nov 8, 2011

Temporary door lock assembly

TEMPLOK INC8 citations69