Inventor
HOLLFELDER THOMAS A
7 patents
⚠️ This page may combine multiple inventors who share the name “HOLLFELDER THOMAS A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
PORTA SYSTEMS CORP
6 patentsUS4335416AJun 15, 1982
Telephone protector module having flag indicator
PORTA SYSTEMS CORP9 citations72
US4334129AJun 8, 1982
Telephone digital office cutover system
PORTA SYSTEMS CORP10 citations71
USD271295SNov 8, 1983
Combined telephone connector block and circuit protector
PORTA SYSTEMS CORP4 citations61
USD273290SApr 3, 1984
Telephone connector block
PORTA SYSTEMS CORP3 citations60
USD273289SApr 3, 1984
Telephone connector block
PORTA SYSTEMS CORP2 citations60
USD271100SOct 25, 1983
Telephone connector block
PORTA SYSTEMS CORP5 citations60