STROMBERG CARLSON TELEPHONE

STROMBERG

Active Patents

Total Holdings

Patent Holdings

Patent No.	Title	Status	Filing Date	Grant Date	Actions
US1861754A	Call distributing telephone system	Expired / Lapsed	1929-08-10	1932-06-07	Details
US1812641A	Remote control magneto telephone system	Expired / Lapsed	1930-05-31	1931-06-30	Details
US1674298A	Alternating-current rectifier	Expired / Lapsed	1925-07-28	1928-06-19	Details