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CORWIN TELEPHONE MFG COMPANY

Overview
  • Total Patents
    41
About

CORWIN TELEPHONE MFG COMPANY has a total of 41 patent applications. Its first patent ever was published in 1907. It filed its patents most often in United States. Its main competitors in its focus markets telecommunications, electrical machinery and energy and audio-visual technology are THOMSON ERICSSON TELEPHONES SO, AUTOMATISCHE FERNSPRECH ANLAGE and GEN TELEPHONE LAB INC.

Patent filings in countries

World map showing CORWIN TELEPHONE MFG COMPANYs patent filings in countries
# Country Total Patents
#1 United States 41

Patent filings per year

Chart showing CORWIN TELEPHONE MFG COMPANYs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Corwin Elmer R 24
#2 Bals Charles A 11
#3 Johnson Morton L 10
#4 Royal Roscoe 1
#5 Staub Frank X 1

Latest patents

Publication Filing date Title
US1075260A Telephony.
US1075259A Telephony.
US1071210A Telephony.
US1085974A Telephone system.
US1075258A Telephony.
US1053998A Telephone-exchange system.
US1071212A Telephony.
US1033859A Bank of keys.
US1071207A Telephone system.
US1040629A Telephone system.
US1040637A Telephone-transmitter.
US1075257A Telephony.
US1045034A Telephony.
US1053997A Telephony.
US1071208A Telephone system.
US1030504A Telephony.
US1056424A Telephony.
US1056425A Telephony.
US1056423A Telephony.
US1040636A Telephony.