P

Inventor

HARTMANN JAMES J

US4 patents
⚠️ This page may combine multiple inventors who share the name “HARTMANN JAMES J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

E5 GLOBAL INNOVATIONS INC

2 patents

AT & T BELL LAB

1 patent

AMERICAN TELEPHONE & TELEGRAPH COMPANY

1 patent