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VALSTS ELEKTROTECHNISKA FABRIK

Overview
  • Total Patents
    32
About

VALSTS ELEKTROTECHNISKA FABRIK has a total of 32 patent applications. Its first patent ever was published in 1936. It filed its patents most often in Germany, France and Austria. Its main competitors in its focus markets optics and machines are AIREQUIPT MFG CO INC, VOIGTLANDER & SOHN AG and MEOPTA NARODNI PODNIK.

Patent filings in countries

World map showing VALSTS ELEKTROTECHNISKA FABRIKs patent filings in countries
# Country Total Patents
#1 Germany 5
#2 France 5
#3 Austria 4
#4 Switzerland 4
#5 Finland 4
#6 United Kingdom 4
#7 Canada 3
#8 United States 3

Patent filings per year

Chart showing VALSTS ELEKTROTECHNISKA FABRIKs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Optics
#2 Machines

Top inventors

# Name Total Patents
#1 Zapp Walter 8
#2 Walter Zapp 7
#3 Elektrotechniska Fabrika Valst 4

Latest patents

Publication Filing date Title
US2278505A View finder for photographic apparatus
DE706251C Viewfinders for photographic apparatus
GB521679A Improvements in view-finders for photographic apparatus
DE705158C Viewfinders for photographic apparatus
US2218966A Package for roll film
US2147567A Lens mechanism for photographic apparatus
DE685825C Roll film pack
GB497815A Improvements in daylight-packages for unperforated roll film for photographic apparatus
DE698952C Roll film camera
GB495149A Improvements in photographic roll film cameras
DE701587C Film switching device
GB506749A Improvements in focussing mechanisms for the lenses in photographic apparatus
CA379939A Photographic apparatus film feeding mechanism
CA384038A Roll film package
CA379803A Photographic apparatus