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KAMMERER JR ARCHER W

Overview
  • Total Patents
    24
About

KAMMERER JR ARCHER W has a total of 24 patent applications. Its first patent ever was published in 1955. It filed its patents most often in United States and Canada. Its main competitors in its focus markets civil engineering, machines and mechanical elements are MOODY JOSEPH F, DOHENY STONE DRILL CO and WEBB CHARLES T.

Patent filings in countries

World map showing KAMMERER JR ARCHER Ws patent filings in countries
# Country Total Patents
#1 United States 18
#2 Canada 6

Patent filings per year

Chart showing KAMMERER JR ARCHER Ws patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Kammerer Jr Archer W 10
#2 Kammerer Archer W 10
#3 Kammerer Archer W Jr 6
#4 Lamphere Jean K 3
#5 Lamphere David E 1

Latest patents

Publication Filing date Title
US3894582A Slack removal apparatus
US3497020A System for reducing hydrostatic pressure on formations
US3489445A Threaded sucker rod joint
US3289760A Method and apparatus for cementing and conditioning bore holes
US3283834A Rotary expansible drill bits
US3147536A Apparatus for milling tubular strings in well bores
US3050143A Retrievable well bore drilling apparatus
US3097708A Retrievable drilling apparatus
US2945677A Hydraulic weight compensating apparatus for well bore devices
US2945676A Hydraulic weight control and compen-sating apparatus for subsurface well bore devices
US2855994A Milling apparatus
US2863641A Rotary expansible drill bits
US2823901A Expansible rotary drilling tools
US2799478A Rotary expansible drill bits
US2803435A Rotary drill bit and stabilizer
US2780830A Pin retainer
US2832568A Rotary expansible drill bits
US2809016A Expansible rotary drill bits
CA596607A Rotary expansible drill bits
CA628274A Expansible rotary drill bit