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WALKER O S CO INC

Overview
  • Total Patents
    15
About

WALKER O S CO INC has a total of 15 patent applications. Its first patent ever was published in 1930. It filed its patents most often in United States, Germany and United Kingdom. Its main competitors in its focus markets machine tools, electrical machinery and energy and machines are FUJI JIKO KK, S P D S P A and BRAILLON & CIE SA.

Patent filings in countries

World map showing WALKER O S CO INCs patent filings in countries
# Country Total Patents
#1 United States 11
#2 Germany 2
#3 United Kingdom 2

Patent filings per year

Chart showing WALKER O S CO INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Engelsted John N 3
#2 Engelsted John Niels 2
#3 Tracy Howard E 2
#4 Carson George J 2
#5 Engeisted John N 1
#6 Edward Bauer 1
#7 Mcdonald Donald C 1
#8 Briggs Charles D 1
#9 Gotha Daniel F 1
#10 Bauer Eduard 1

Latest patents

Publication Filing date Title
US4020436A Lifting magnet for layered pipe
DE1165224B Permanent magnet lifting device
US3121193A Permanent magnet work holding device
US3079191A Permanent magnet lifting device
US3078396A Demagnetizing apparatus
US2883197A Magnetic driver for annular work
GB868491A Permanent magnet work holding and lifting device
DE1257001B Permanent magnetic workpiece holder
US3231789A Permanent magnet chuck
US2918610A Magnetic chuck
US2435737A Magnetic chuck top plate
US2409017A Magnetic swivel work holder
US1837693A Electric switch for magnetic chucks
US1945986A Grinding machine