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KARL GEYER MASCHINEN UND APPBA

Overview
  • Total Patents
    18
About

KARL GEYER MASCHINEN UND APPBA has a total of 18 patent applications. Its first patent ever was published in 1921. It filed its patents most often in Germany. Its main competitors in its focus markets optics and audio-visual technology are ANDRE VICTOR LEON CLEMENT DEBR, TEVERAMA SA and WYMAN HORACE.

Patent filings in countries

World map showing KARL GEYER MASCHINEN UND APPBAs patent filings in countries
# Country Total Patents
#1 Germany 18

Patent filings per year

Chart showing KARL GEYER MASCHINEN UND APPBAs patent filings per year from 1900 to 2020

Focus industries

Latest patents

Publication Filing date Title
DE683006C Method for attaching the metal clips in the progressive holes of cinema films for the automatic control of the copier light strength
DE619484C Process to prevent the film loops from collapsing in drying devices for film tapes
DE624556C Film processing, in particular developing machine
DE682145C Method and device for copying intermediate titles or explanatory titles (footer titles) into positive films from an unchanged negative
DE436555C Recording cinema with permanently attached spring motor
DE441689C Demonstration cinematograph with fire protection flap in the lamp house
DE434236C Winding drum for cinema sets
DE427569C Fire damper lifting device
DE437805C Film drive roller with swiveling pair of pressure rollers
DE411616C Device for selecting the negative parts for assembling roll film negatives from a sample copy
DE411615C Device for determining the copy light for a negative film from film copy samples
DE364395C Dyeing machine for cinematographic film strips
DE376008C Device for handling film strips
DE427058C Device for adjusting the lens of photographic and cinematographic cameras
DE643212C Copier for audio or audio negatives
DE331910C Measuring gauge for film strips
DE350237C Device for controlling yellow and ground glass screens of film copying machines
DE619813C Twin throughfeed copier for copying image and sound films