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O'GRADY FREDERICK T

Overview
  • Total Patents
    11
About

O'GRADY FREDERICK T has a total of 11 patent applications. Its first patent ever was published in 1921. It filed its patents most often in United States and Canada. Its main competitors in its focus markets optics are KINO LTD, BRIGHT SUPPLY CORP and NINGBO GQY VIDEO & TELECOM JOINT STOCK CO LTD.

Patent filings in countries

World map showing O'GRADY FREDERICK Ts patent filings in countries
# Country Total Patents
#1 United States 10
#2 Canada 1

Patent filings per year

Chart showing O'GRADY FREDERICK Ts patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Optics

Focus technologies

# Technology
#1 Cameras

Top inventors

# Name Total Patents
#1 O'Grady Frederick T 11

Latest patents

Publication Filing date Title
US2402660A Apparatus for producing balanced color reproductions of off-balance color recordings
US2249033A Apparatus for printing motion picture films
US2228479A Color photography apparatus
US2249032A Color photography
US2168043A Motion picture film-advancing mechanism
US2207103A Apparatus for printing motion picture films
US2168042A Lens assembly for motion picture projection
US2168041A Color motion picture projection
US1794727A Shutter for motion-picture-projecting machines
US1465054A Color motion-picture photography
CA281075A Motion picture projector