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GRAY ELISHA

Overview
  • Total Patents
    28
About

GRAY ELISHA has a total of 28 patent applications. Its first patent ever was published in 1879. It filed its patents most often in Canada, Spain and United States. Its main competitors in its focus markets measurement and machines are SCIENT PREDICTION INC, SEISMOGRAPH SERVICE CORP and ADROK LTD.

Patent filings in countries

World map showing GRAY ELISHAs patent filings in countries
# Country Total Patents
#1 Canada 22
#2 Spain 3
#3 United States 2
#4 Switzerland 1

Patent filings per year

Chart showing GRAY ELISHAs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Measurement
#2 Machines

Focus technologies

Top inventors

# Name Total Patents
#1 Gray Elisha 25
#2 Mundy Arthur J 1

Latest patents

Publication Filing date Title
US636520A Transmission of sound and device for carrying same into effect.
US636519A Transmission of sound.
CA56882A Lamps, etc.
CA51660A Telautograph
CA6201A Improvements in the art of and in the apparatus for transmitting musicalsounds telegraphically
CA5496A Art of transmitting musical sounds telegraphically and apparatus therefor
CA45321A Art of telegraphy
CA9483A Art of, and apparatus for, tansmitting sounds telegraphically
CA6101A Electro-harmonic telegraph
CA9482A Art of, and apparatus for, tansmitting sounds telegraphically
CA45319A Telautograph
CA45317A Telautograph
CA45318A System of telautography
CA8366A Improvements on multiple telegraphy
CA45320A Telautograph
CA9480A Apparatus for, tansmitting sounds telegraphically
CA30839A Telautograph
CA9481A Apparatus for tansmitting sounds telegraphically
CA45453A Telautograph
CA46395A Electro mechanical movement