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AMERICAN TELEGRAPHONE COMPANY

Overview
  • Total Patents
    18
About

AMERICAN TELEGRAPHONE COMPANY has a total of 18 patent applications. Its first patent ever was published in 1900. It filed its patents most often in United States. Its main competitors in its focus markets audio-visual technology, machines and machine tools are OMD OPTICAL MEMORY DEVICES LTD, RYAN PLASTICS IRELAND and PLASMON DATA SYSTEMS INC.

Patent filings in countries

World map showing AMERICAN TELEGRAPHONE COMPANYs patent filings in countries
# Country Total Patents
#1 United States 18

Patent filings per year

Chart showing AMERICAN TELEGRAPHONE COMPANYs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Audio-visual technology
#2 Machines
#3 Machine tools

Top inventors

# Name Total Patents
#1 Lieb John A 5
#2 Poulsen Valdemar 5
#3 Pedersen Peder Oluf 3
#4 Pedersen Peder Olof 2
#5 Tiffany George S 1
#6 Hagemann Emil Schack 1
#7 Washburn Howard L 1
#8 Schaefer Frederic 1
#9 Stuart Harve R 1
#10 Hytten Ejnar Alexander 1

Latest patents

Publication Filing date Title
US1155776A Telegraphone.
US1142384A Telegraphone.
US934843A Telegraphone.
US936490A Telegraphone.
US909414A Telegraphone apparatus.
US873078A Electromagnet for telegraphone purposes.
US873042A Apparatus for receiving and strengthening the reproduction of messages, signals, &c.
US873083A Telegraphone.
US873084A Telegraphone.
US889317A Magnet for telegraphones.
US882328A Amplifying-magnet system for telegraphones.
US882327A Circuit-controlling device for telegraphones.
US907383A Record-disk for telegraphones.
US882329A Telegraphone.
US900304A Electromagnet for telegraphones.
US836339A Magnetizable body for the magnetic record of speech, &c.
US822222A Apparatus for effecting the storing up of speech or signals.
US699630A Method of recording messages, signals, & c.