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HENRY JOHN CULLUM

Overview
  • Total Patents
    18
About

HENRY JOHN CULLUM has a total of 18 patent applications. Its first patent ever was published in 1920. It filed its patents most often in United Kingdom and Germany. Its main competitors in its focus markets audio-visual technology, furniture and games and consumer goods are SONORA PHONOGRAPH COMPANY INC, COLUMBIA GRAPHOPHONE COMPANY and FISCHER ALEX.

Patent filings in countries

World map showing HENRY JOHN CULLUMs patent filings in countries
# Country Total Patents
#1 United Kingdom 15
#2 Germany 3

Patent filings per year

Chart showing HENRY JOHN CULLUMs patent filings per year from 1900 to 2020

Latest patents

Publication Filing date Title
GB372918A Improvements in or relating to radio gramophones
GB320675A Improvements in or relating to hinges
GB319399A Improvements in or relating to gramophones and like sound-reproducing machines
GB305819A Improvements in or relating to sound boxes of gramophones and like sound-reproducingmachines
GB301149A Improvements in self-locking stays for hinged members
GB274991A Improvements in or relating to sound amplifying horns for gramophones, loud speakers, and other like sound-reproducing apparatus
GB252888A Improvements in or relating to gramophones and like sound-reproducing machines
GB234540A Improvements in or relating to gramophones and like sound-reproducing machines
GB222952A Improvements in or relating to gramophones and like sound reproducing apparatus
GB201247A Improvements in or relating to gramophones
GB195190A Improvements in or relating to gramophones
GB186121A Improvements in or relating to sound boxes for gramophones, phonographs and the like
GB183327A Improvements in or relating to gramophones
GB161358A Improvements in or relating to filing cabinets for gramophone records and other likearticles
GB161357A Improvements in or relating to filing cabinets for gramophone records and other likearticles