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WEBSTER CHICAGO CORP

Overview
  • Total Patents
    51
About

WEBSTER CHICAGO CORP has a total of 51 patent applications. Its first patent ever was published in 1940. It filed its patents most often in United States, United Kingdom and Canada. Its main competitors in its focus markets audio-visual technology, machines and electrical machinery and energy are VIVASTAR MATERIALS AG, DUGAS MATTHEW P and ONSTREAM INC.

Patent filings in countries

World map showing WEBSTER CHICAGO CORPs patent filings in countries
# Country Total Patents
#1 United States 31
#2 United Kingdom 8
#3 Canada 5
#4 Switzerland 2
#5 Germany 2
#6 France 2
#7 Denmark 1

Patent filings per year

Chart showing WEBSTER CHICAGO CORPs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Dale Colin B 33
#2 Bridenbaugh Paul K 2
#3 Colin Bertram Dale 2
#4 Conrad Norman L 2
#5 Dale Colin Bertram 1
#6 Wagner Harry H 1
#7 Bara Edwin Stanley 1
#8 Jansen Frank A 1
#9 Bierman Raymond C 1
#10 Edwin S Bara 1

Latest patents

Publication Filing date Title
GB810954A Improvements in or relating to record changers
GB792778A Improvements in or relating to record-supporting spindle
GB770094A Improvements in and relating to automatic record changers
GB736334A Improvements in or relating to electromagnetic sound recording and reproducing devices
GB731136A Improved controlling device for clockwork and like mechanisms
DE952392C Tape recorder with flange coils
GB738542A Improvements in and relating to spools for magnetic tape recorders
GB742842A Improvements in or relating to record changers
DE974282C Attachable stacking axis for records with a large center hole on a stacking axis for records with a small center hole
GB724587A Improvements in and relating to automatic record changers for phonographs
US2666648A Adapter for phonograph spindles having internally powered record push-off mechanism
US2741439A Magnetic tape recorder
US2666647A Adapter for phonograph records
US2795428A Switch mechanism for phonograph record changers
US2588093A Tuning mechanism for television sets and the like
US2652258A Phonograph
US2651523A Adapter for phonograph records
US2614845A Wire recorder
US2577649A Speed adjustment for phonograph turntables
US2634983A Spindle for phonograph records