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H & H MACHINE & MOTOR PARTS CO

Overview
  • Total Patents
    12
About

H & H MACHINE & MOTOR PARTS CO has a total of 12 patent applications. Its first patent ever was published in 1935. 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 NORTH BROS MFG CO, CEDAR RAPIDS ENG CO and ARMSTRONG BROS TOOL CO.

Patent filings in countries

World map showing H & H MACHINE & MOTOR PARTS COs patent filings in countries
# Country Total Patents
#1 United States 12

Patent filings per year

Chart showing H & H MACHINE & MOTOR PARTS COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Michael Holhut 6
#2 Vollmer Walter G 6
#3 Michener Edward R 2
#4 Frank Schulte 1

Latest patents

Publication Filing date Title
US2838145A Methods and means for repairing cracked castings
US2174709A Boring machine
US2173398A Machine-shop fixture
US2102897A Bolt-setting tool
US2103531A Pouring jig
US2102707A Valve-seat surfacing tool
US2104345A Valve stem grinding and fitting device
US2115952A Boring tool
US2104900A Carbon removing tool
US2103568A Motor-block stand
US2106367A Motor-block stand
US2103294A Cylinder reboring-plate