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GRENGEL WEICHENBAU G M B H H

Overview
  • Total Patents
    14
About

GRENGEL WEICHENBAU G M B H H has a total of 14 patent applications. Its first patent ever was published in 1925. It filed its patents most often in Germany, Austria and France. Its main competitors in its focus markets civil engineering, machine tools and transport are HESSE G M B H E, KANG WON RAIL WAY SYSTEM CO LT and SCHWIHAG AG.

Patent filings in countries

World map showing GRENGEL WEICHENBAU G M B H Hs patent filings in countries
# Country Total Patents
#1 Germany 10
#2 Austria 3
#3 France 1

Patent filings per year

Chart showing GRENGEL WEICHENBAU G M B H Hs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Civil engineering
#2 Machine tools
#3 Transport

Latest patents

Publication Filing date Title
DE490083C Switch tongue bearings
DE486164C Grooved rail switch for tram tracks
DE480485C Soft
DE479986C Rail joint with Auflaufstueck
DE479987C Compensating rail joint with bridging tongue
DE449868C Spring lock for points
DE448495C Bearings for switch blades
DE464953C Tram switch
DE479858C Heart or cross with the same flap chambers
DE467487C Tram switch