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DOUGLAS & RUDD MFG CO

Overview
  • Total Patents
    22
About

DOUGLAS & RUDD MFG CO has a total of 22 patent applications. Its first patent ever was published in 1916. It filed its patents most often in United States. Its main competitors in its focus markets electrical machinery and energy, machine tools and machines are SHEN HUIPING, HOFFMEISTER & SOHN and KOHEN RAN.

Patent filings in countries

World map showing DOUGLAS & RUDD MFG COs patent filings in countries
# Country Total Patents
#1 United States 22

Patent filings per year

Chart showing DOUGLAS & RUDD MFG COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Douglas Harry A 22

Latest patents

Publication Filing date Title
US1339695A Reflecting-lamp
US1377411A Circuit-connector
US1261790A Circuit-connector switch.
US1391303A Connector
US1377410A Circuit-extending plug
US1299147A Circuit-continuing device.
US1261783A Reflecting electric lamp.
US1261786A Reflecting-lamp.
US1261784A Reflecting-lamp.
US1261788A Reflecting-lamp.
US1261785A Reflecting electric lamp.
US1285071A Reflecting-lamp.
US1261787A Reflecting electric lamp.
US1291444A Projector.
US1220141A Circuit-connector.
US1236553A Circuit-connector.
US1220140A Circuit-connector.
US1236552A Cowl-lamp.
US1220139A Circuit-connector.
US1217925A Cowl-lamp.