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PARKER FREDERICK R

Overview
  • Total Patents
    32
About

PARKER FREDERICK R has a total of 32 patent applications. Its first patent ever was published in 1903. It filed its patents most often in United States. Its main competitors in its focus markets electrical machinery and energy, telecommunications and machines are OUYANG ZHI-BIN, MCCULLOUGH FRANCIS P and YANG MU-WEN.

Patent filings in countries

World map showing PARKER FREDERICK Rs patent filings in countries
# Country Total Patents
#1 United States 32

Patent filings per year

Chart showing PARKER FREDERICK Rs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Parker Frederick R 32

Latest patents

Publication Filing date Title
US2994155A Toy device for launching rotary wing flying objects
US1640516A Electrical protective apparatus
US1488936A High-potential electricity-arrester electrode
US1503285A Process of producing uniform voltaic cells
US1503284A High-potential-electricity arrester
US1446720A Process of treating electrical resistances to stabilize their resistance
US1252942A Electrical protector.
US1408632A Relay
US1238728A Combined lightning-arrester and thermal protector.
US1226617A Electromagnet.
US1366095A Voltaic cell and electrode
US1468574A Voltaic cell
US1182202A Voltaic cell and battery.
US1179380A High-potential electricity-arrester.
US1405935A Mounting plate for electrical protective apparatus
US1245014A Electrical protective apparatus.
US1259901A Relay.
US1333771A Voltaic cell and battery
US1121282A Gas-cock.
US1106108A Safety-valve.