Inventor

TRYGAR ROBERT A

US2 patents

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

AMERICAN TELEPHONE & TELEGRAPH

1 patent

US4736364AApr 5, 1988

Switching system control arrangements

AMERICAN TELEPHONE & TELEGRAPH130 citations91

AMPORT CARL W

1 patent

US8681960B2Mar 25, 2014

Extending originating capabilities of a subscriber to devices in any telephony network

AMPORT CARL W0 citations21