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DRWIEGA BOHDAN

Overview
  • Total Patents
    18
About

DRWIEGA BOHDAN has a total of 18 patent applications. Its first patent ever was published in 1974. It filed its patents most often in France, United Kingdom and United States. Its main competitors in its focus markets optics are FIORENTINI ACHILLE, FOREIGN DIETERICH CORP and DAUTWITZ WERNER.

Patent filings per year

Chart showing DRWIEGA BOHDANs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Optics

Focus technologies

# Technology
#1 Cameras

Top inventors

# Name Total Patents
#1 Drwiega Bohdan 10
#2 Drwiega B 1

Latest patents

Publication Filing date Title
CA1299403C Projector for photographic transparencies
EP0147462A1 Slide projector and device for storing slides to be presented with the projector.
GB8417005D0 Projector for photographic transparencies
GB8417006D0 Device for mounting and storing photographic slides
GB8318079D0 Projector
GB8318081D0 Mounting and storing photographic slides
DE2914833A1 DEVICE FOR SHOWING FRAMED DIAPOSITIVE
FR2396987A1 Multidirection, multi-slide projector - uses flat sheets of slides with movable carriages to place slides in optical light path
US4076401A Arrangement and method for the storage of lantern slides and projector for viewing thereof
NL7513910A Album for storage of projector slides - has loose leaf binder for rectangular array of slides in transparent mounts
FR2312047A2 Arrangement and classification of photographic slides - uses slides which are arranged on moulded pages in book form