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PERKINS MACHINE & GEAR CO

Overview
  • Total Patents
    83
About

PERKINS MACHINE & GEAR CO has a total of 83 patent applications. Its first patent ever was published in 1925. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets machines, machine tools and consumer goods are PERKINS JULIAN L, PERKINS MACHINE & GEAR COMPANY and VOSS WILLIAM H.

Patent filings in countries

World map showing PERKINS MACHINE & GEAR COs patent filings in countries
# Country Total Patents
#1 United States 68
#2 Canada 9
#3 United Kingdom 3
#4 France 2
#5 Germany 1

Patent filings per year

Chart showing PERKINS MACHINE & GEAR COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Perkins Julian L 31
#2 Croft Hiram D 28
#3 John Oakley 22
#4 Deloghia Louis E 10
#5 Keltz Max J 4
#6 Oakley John 3
#7 Peavey William L 1
#8 Perkins Julian Leigh 1
#9 Collins Thomas Jr 1
#10 Collins Jr Thomas 1

Latest patents

Publication Filing date Title
US3008461A Apparatus for dressing or forming the working surface of an abrasive wheel
US2860749A Clutch for driving mechanism
US2820488A Spring forming apparatus
GB708379A A machine for making helical wire coils
US2444021A Washing machine drive
US2473816A Drive mechanism
US2473815A Tool apparatus
US2482717A Driving head for wringers
US2444018A Hydraulic pulsator drive mechanism
US2443979A Operating mechanism for washing machines
US2426084A Protective means for heating furnace fronts
US2531353A Operating mechanism for washing machines and the like
US2479535A Operating mechanism for washing machines and the like
US2395789A Operating mechanism
US2444017A Friction drive
US2388176A Washing machine drive
US2387283A Washing machine drive
US2388175A Washing machine drive
US2344940A Handling device
US2347710A Work holding device