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CAMPBELL JAMES W

Overview
  • Total Patents
    13
About

CAMPBELL JAMES W has a total of 13 patent applications. Its first patent ever was published in 1898. It filed its patents most often in United States and Canada. Its main competitors in its focus markets machines, mechanical elements and furniture and games are BOGAR ISTVAN, FIBROC INSULATION COMPANY and JUDSON WHITCOMB L.

Patent filings in countries

World map showing CAMPBELL JAMES Ws patent filings in countries
# Country Total Patents
#1 United States 12
#2 Canada 1

Patent filings per year

Chart showing CAMPBELL JAMES Ws patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Campbell James W 13

Latest patents

Publication Filing date Title
US2012174867A1 Wildlife feeding block
US2012152173A1 Apparatus for feeding wildlife especially deer
US3341876A Combination mop and bucket
US3101948A Golf shot indicating device for golf shot practice ball
US2527298A Baffled time delay mercury switch
US1182752A Variable-speed gearing.
US1182751A Variable-speed gearing.
US1133837A Variable-speed gearing.
US817623A Safety-gear for skips, cages, and the like.
US806320A Case for phonograph-records.
US669073A Rein-holder.
US638953A Flue or chimney.
CA340502A Merchandising carton