§
Luxuse
Patent Intelligence
Sign In
← Back to Companies

Bell Telephone Mfg

Bell Telep
Active Patents
0
Total Holdings
2

Patent Holdings

Filter in Explorer →
Patent No. Title Status Filing Date Grant Date Claims Actions
CH191096A AC signaling system. Expired / Lapsed 1934-10-22 — 0 Details
CH137145A Improvement provided to telephone transmitters. Expired / Lapsed 1928-05-09 — 0 Details