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PARKER JOHN W

Overview
  • Total Patents
    18
About

PARKER JOHN W has a total of 18 patent applications. Its first patent ever was published in 1905. It filed its patents most often in United States and Canada. Its main competitors in its focus markets machine tools, mechanical elements and machines are TOS HOSTIVAR NP, BOCK BEARING COMPANY and LUOYANG XIGONG DISTR HUAKE PREC MACHINERY PLANT.

Patent filings in countries

World map showing PARKER JOHN Ws patent filings in countries
# Country Total Patents
#1 United States 15
#2 Canada 3

Patent filings per year

Chart showing PARKER JOHN Ws patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Parker John W 17
#2 Mcgrath Cyrus D 1

Latest patents

Publication Filing date Title
US2676276A High-speed spindle
US2666577A Computer board
US2456079A Surface grinder
US2316449A Bearing
US2127614A Grinding wheel dressing unit
US2017290A Spindle construction
US1826219A Grinding wheel trimming fixture
US1886219A Bearing
US1430319A Self-aligning high-speed ball-race bearing
US1479205A Universal grinding, drilling, and turning machine
US1392210A High-speed spindle
US833544A Method of cleansing harbors.
US833543A Apparatus for cleansing harbors.
US833623A Gutter-curb and means for protecting curb angles.
CA229081A Universal grinding drilling and turning machine
CA41990A Inhaler
US964688A Puzzle.
CA221326A Self aligning high speed ball race bearing