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LEVALLOIS OPTIQUE ET PREC

Overview
  • Total Patents
    140
About

LEVALLOIS OPTIQUE ET PREC has a total of 140 patent applications. Its first patent ever was published in 1920. It filed its patents most often in France, United States and Germany. Its main competitors in its focus markets optics, measurement and basic communication technologies are OPTIQUE & DE MECANIQUE DE HAUT, STUART WILLIAMSON and HUET ET CIE SOC.

Patent filings in countries

World map showing LEVALLOIS OPTIQUE ET PRECs patent filings in countries
# Country Total Patents
#1 France 118
#2 United States 9
#3 Germany 7
#4 United Kingdom 6

Patent filings per year

Chart showing LEVALLOIS OPTIQUE ET PRECs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Guillant Andre 4
#2 Andre Guillant 3
#3 Eugene Morelle Jules Louis 3
#4 Gramo Armand Antoine Auguste A 2
#5 Batard Marcel-Aime-Daniel 2
#6 Gigoux Marcel-Charles 2
#7 Morelle Jules Louis Eugene 2
#8 Riberolles Rene 2
#9 Rouillard Raymond-Fernand 2
#10 Terrien Jean 1

Latest patents

Publication Filing date Title
DE1448899B1 Device for reading or setting angular or linear dimensions
DE1240675B Optical method for reading measuring or setting scales and device for carrying out this method
US3242792A Optical instrument with liquid mirror for locating ground point vertically aligned with overhead sighting point
US3173414A Biopsy probe, and combination thereof with an endoscope
DE1263324B Coincidence Range Finder
US3118069A Photo-electric device for determining relative positions
DE1207640B Device for photoelectrically determining the position of an object that can be adjusted with respect to a reference position
US3018705A Setting devices for photographic apparatus
US3077822A Control devices for photographic apparatus
DE1157074B Single-lens reflex camera
US3094913A Reflex photographic apparatus with single object-lens, with improved synchronized control and coupling mechanism
DE1177470B Device for focusing for cameras
DE1001009B Basic rangefinder
GB717480A Improvements in or relating to telemeters
GB639994A Improvements in or relating to range-finders or telemeters of the short home-base coincidence type coupled with photographic or kinematograph camera objectives
US2495510A Enlarging easel supporting means
US2497981A Microscopic vernier reader
US2424011A Telescope adjusting device
GB576722A Improvements in photographic roll film cameras
GB532272A Improvements in or relating to collimators