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WILLIAMSON MFG COMPANY LTD

Overview
  • Total Patents
    33
About

WILLIAMSON MFG COMPANY LTD has a total of 33 patent applications. Its first patent ever was published in 1937. It filed its patents most often in United Kingdom, France and Canada. Its main competitors in its focus markets optics, electrical machinery and energy and measurement are WILLIAM CECIL JEAPES, DURST PHOTOTECHNIK SRL and HALL EDWARD LANDER.

Patent filings in countries

World map showing WILLIAMSON MFG COMPANY LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 16
#2 France 8
#3 Canada 4
#4 United States 4
#5 Belgium 1

Patent filings per year

Chart showing WILLIAMSON MFG COMPANY LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Woodcock Edward Cecil 10
#2 Woodcock Edward C 4
#3 Cecil Woodcock Edward 4
#4 Williamson Stuart 3
#5 Williamson Colin Martin 1
#6 Odle John Elsdon 1

Latest patents

Publication Filing date Title
US3309079A Feeding of cut films
GB1082472A Apparatus for feeding sheets to a processing apparatus
FR1347409A Negative holder
FR1347410A Double cam for pulling device
FR1332445A Photographic projection printing device
GB1029292A Photographic projection printing apparatus
GB961993A Magazine photographic camera
GB975396A Improvements in and relating to photographic copying apparatus
US3102462A Photographic shutters
GB950822A Improvements in and relating to photographic projection printing apparatus
GB847230A Improvements in and relating to web processing apparatus
GB784247A Improvements in and relating to photographic shutters
GB805582A Improvements in and relating to photographic shutters
US2916979A Photographic shutters
FR1110911A Development of devices producing electrical pulses at predetermined intervals
GB805581A Improvements in and relating to photographic shutters
FR1145116A Improvements to cinematographic cameras
GB753531A Improvements in and relating to pencil sharpeners
GB770634A Improvements in and relating to photographic cameras
GB770635A Improvements in and relating to photographic cameras