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AMERICAN VALVE AND METER COMPA

Overview
  • Total Patents
    24
About

AMERICAN VALVE AND METER COMPA has a total of 24 patent applications. Its first patent ever was published in 1923. It filed its patents most often in United States and Canada. Its main competitors in its focus markets transport, machines and mechanical elements are GEN RAILWAY SIGNAL CORP, ANDERSON FRANK C and JOHN SAXBY LTD.

Patent filings in countries

World map showing AMERICAN VALVE AND METER COMPAs patent filings in countries
# Country Total Patents
#1 United States 19
#2 Canada 5

Patent filings per year

Chart showing AMERICAN VALVE AND METER COMPAs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Anderson Frank C 8
#2 Gray Wallace M 6
#3 Bolt Malon C 3
#4 Gilbert William L 2
#5 Mcgarry John T 2
#6 Elmore Paul W 2
#7 Birmingham Raymond A 1
#8 Umholtz Robert B 1

Latest patents

Publication Filing date Title
US1940527A Means for lubricating car wheels and rails
US1846483A Water hammer and relief valve
US1811830A Switch stand
US1814307A Railway switch apparatus
US1814306A Railway switch stand
US1895030A Rail joint clamp
US1991725A Means for lubricating car wheels and rails
US1831313A Track lubricating apparatus
US1760846A Railway-switch mechanism
US1757402A Lubricating device for car wheels and tracks
US1661695A Automatic switch stand
US1677388A Automatic switch stand
US1622019A Switch-interlocking device
US1554545A Locking device for interlocking switch stands
US1547010A Locking device for interlocking switch stands
US1554544A Locking device for interlocking switch stands
US1554543A Locking device for interlocking switch stands
US1554542A Locking device for interlocking switch stands
US1463140A Switch stand
CA319436A Car wheel and rail lubricating device