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DAVIS ERNEST W

Overview
  • Total Patents
    39
About

DAVIS ERNEST W has a total of 39 patent applications. Its first patent ever was published in 1909. It filed its patents most often in United States. Its main competitors in its focus markets mechanical elements, machines and optics are BOB IFIELD HOLDINGS PTY LTD, WOERNER SIST LUBRIFICACAO and ALEMITE MFG CORP.

Patent filings in countries

World map showing DAVIS ERNEST Ws patent filings in countries
# Country Total Patents
#1 United States 39

Patent filings per year

Chart showing DAVIS ERNEST Ws patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Davis Ernest W 39

Latest patents

Publication Filing date Title
US2702657A Triple action control valve
US2699271A Control valve for lubricating apparatus
US2556680A Valve mechanism for reciprocatory fluid pressure operated motors
US2617496A Measuring valve
US2516758A Coupler for lubricating apparatus
US2578517A Coupler for lubricating apparatus
US2627814A Lubricant pump
US2586456A Manually operated control valve for lubricating apparatus
US2500524A Pump for centralized lubricating systems
US2523899A Multiple oiler
US2499571A Oiling system
US2553177A Measuring valve
US2616523A Lubricating apparatus
US2543231A Lubricant pump
US2497762A Lubrication gun
US2425867A Lubricating apparatus
US2521569A Lubricant compressor
US2477726A Lubricant compressor having means to prevent retrograde movement of the piston thereof
US2433506A Grease gun with a fluid pressure follower
US2406747A Pneumatic motor