Learn more

WILLIAM H KELLER INC

Overview
  • Total Patents
    44
About

WILLIAM H KELLER INC has a total of 44 patent applications. Its first patent ever was published in 1918. It filed its patents most often in United States. Its main competitors in its focus markets machine tools, machines and engines, pumps and turbines are LEWIS HARRY, JORAN BOR A S and WODACK ELECTRIC TOOL CORP.

Patent filings in countries

World map showing WILLIAM H KELLER INCs patent filings in countries
# Country Total Patents
#1 United States 44

Patent filings per year

Chart showing WILLIAM H KELLER INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Shaff Ernest H 37
#2 Albert Schinkez 4
#3 Keller William H 2
#4 Max Maximilian 1
#5 Gottlieb Briegel 1
#6 Sigurd Brantingson Gustaf 1
#7 Radeke Robert W 1

Latest patents

Publication Filing date Title
US2343332A Impact clutch
US2286931A Cutter for dressing electrodes in spot welding machines
US2313843A Riveting tool
US2159232A Pressure fluid motor
US2187502A Pressure fluid operated tool
US2119968A Power wrench
US2143173A Rotary driving tool
US2099280A Portable pressure fluid actuated tool
US2011877A Riveting tool
US1940024A Portable tool
US1946548A Pressure fluid operated tool
US1924812A Pressure fluid operated tool
US1913003A Rotary machine
US1781133A Pressure-fluid motor
US1705232A Feed screw
US1650048A Governor for pressure-fluid-operated tools
US1740669A Governor for pressure-fluid-operated tools
US1707325A Pressure-fluid-operated tool
US1709159A Pressure-fluid-operated tool
US1640620A Governor for pressure-fluid-operated tools