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PETRA AKTIEN GES FUER ELEKTROM

Overview
  • Total Patents
    13
About

PETRA AKTIEN GES FUER ELEKTROM has a total of 13 patent applications. Its first patent ever was published in 1919. It filed its patents most often in Germany, Switzerland and Austria. Its main competitors in its focus markets optics are INTERFOT GES STRATMANN & CO, MESSTER FILM G M B H and MULTIPOSE PORTABLE CAMERAS LTD.

Patent filings in countries

World map showing PETRA AKTIEN GES FUER ELEKTROMs patent filings in countries
# Country Total Patents
#1 Germany 7
#2 Switzerland 4
#3 Austria 1
#4 France 1

Patent filings per year

Chart showing PETRA AKTIEN GES FUER ELEKTROMs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Optics

Focus technologies

Top inventors

# Name Total Patents
#1 Fuer Elektromechanik Petra Akt 4

Latest patents

Publication Filing date Title
DE326529C Device for stopping the picture book in demonstration apparatus for series pictures
DE326528C Process for the production of cinematographic trick shots
DE369607C Device in cinematographs for the optical compensation of image migration
DE326527C Method and device for taking series pictures with tricks
DE326526C Device for securing the formation of loops in row imaging devices
DE326525C Device for incremental switching of picture bands
DE326524C Device for maintaining the loop formation of cinematographic picture tapes in independently working demonstration devices