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AMERICAN GRAPHOPHONE CO

Overview
  • Total Patents
    185
About

AMERICAN GRAPHOPHONE CO has a total of 185 patent applications. Its first patent ever was published in 1896. It filed its patents most often in United States, Canada and France. Its main competitors in its focus markets audio-visual technology, machines and control are VERBATIM CORP, POLYGRAM INT HOLDING and SHAPE INC.

Patent filings in countries

World map showing AMERICAN GRAPHOPHONE COs patent filings in countries
# Country Total Patents
#1 United States 158
#2 Canada 9
#3 France 8
#4 Austria 6
#5 United Kingdom 3
#6 Australia 1

Patent filings per year

Chart showing AMERICAN GRAPHOPHONE COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Macdonald Thomas H 58
#2 Woods Clinton E 27
#3 Capps Frank L 22
#4 Emerson Victor H 20
#5 Scully John J 5
#6 Hinckley Frank C 5
#7 Manwaring George Abbott 5
#8 Manwaring George A 3
#9 Larsen Louis G 3
#10 Steventon Thomas 3

Latest patents

Publication Filing date Title
CA192765A Start and stop device for talking machines
US1280637A Lid-support.
GB113668A Improvements in and relating to Stop Mechanism for Talking and other Machines.
US1291516A Mandrel for sound recording or reproducing machines.
US1293602A Talking-machine.
US1276759A Duplex graphophone.
US1264588A Start and stop mechanism for talking-machines.
US1265793A Split mandrel.
US1209891A Dictaphone attachment.
US1291515A Recording attachment.
US1227748A Shaving-machine for sound-record tablets.
US1205627A Tone-arm mounting for talking-machines.
US1226839A Sound-conveyer and tone-modulator.
US1293489A Talking-machine.
US1291398A Talking-machine.
US1188728A Talking-machine and attachment therefor.
US1216656A Talking-machine.
US1208844A Holder for talking-machine records.
US1181108A Mounting for record-supporting tables in talking-machines.
US1212309A Means for securing a sound-box to the tone-arm of talking-machines.