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CLARK EZRA E

Overview
  • Total Patents
    16
About

CLARK EZRA E has a total of 16 patent applications. Its first patent ever was published in 1899. It filed its patents most often in United States and Canada. Its main competitors in its focus markets civil engineering, mechanical elements and engines, pumps and turbines are US FIRE CONTROL CORP, GLOBE AUTOMATIC SPRINKLER COMPANY and AUTOMATIC SPRINKLER CO.

Patent filings in countries

World map showing CLARK EZRA Es patent filings in countries
# Country Total Patents
#1 United States 12
#2 Canada 4

Patent filings per year

Chart showing CLARK EZRA Es patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Clark Ezra E 16

Latest patents

Publication Filing date Title
US1699095A Check valve
US1630783A Drip valve for dry-pipe valves
US1613343A Means for accelerating the opening of dry-pipe valves
US1673442A Dry-pipe valve
US1568960A Retarding device for alarm check valves
US1501098A Locking mechanism for dry-pipe valves
US1450428A Dry-pipe valve
US1344380A Dry-pipe valve
CA194541A Dry pipe valve
CA186176A Valve
US1300698A Dry-pipe valve.
US1348981A Dry-pipe valve
US1235767A Valve-indicator.
US645789A Valve-motion for engines.
CA247865A Drip valve for dry pipe valves
CA247866A Locking mechanism for dry pipe valves