P

Inventor

HOLBROOK WALTER R

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

WESTERN ELECTRIC CO

2 patents

AT & T BELL LAB

1 patent

BELL TELEPHONE LABOR INC

1 patent

AMERICAN TELEPHONE & TELEGRAPH

1 patent