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COLONIAL BROACH CO

Overview
  • Total Patents
    74
About

COLONIAL BROACH CO has a total of 74 patent applications. Its first patent ever was published in 1930. It filed its patents most often in United States. Its main competitors in its focus markets machine tools, machines and mechanical elements are AMERICAN BROACH & MACHINE CO, BEHRINGER GMBH and MORTON HENRY E.

Patent filings in countries

World map showing COLONIAL BROACH COs patent filings in countries
# Country Total Patents
#1 United States 74

Patent filings per year

Chart showing COLONIAL BROACH COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Hart William A 19
#2 Benedict Welte 17
#3 Halborg Carl J 13
#4 Gotberg Harry H 12
#5 Nilsson Axel L 5
#6 Thompson Richard A 5
#7 Abbott Jr Olney J 4
#8 Jessup James L 3
#9 De Lorme Charles R 1
#10 Seibold Paul F 1

Latest patents

Publication Filing date Title
US2849928A Combined horizontal and vertical broaching machine
US2711674A Two-station broaching machine
US2880652A Ring gear broaching machine
US2665680A Radius dresser
US2614371A Steady rest
US2586937A Grinding-wheel dressing fixture
US2551860A Means mounting curtain for covering ways of machine beds
US2649662A Broach sharpening machine
US2528753A Index head for rotary spindles
US2596814A Helical spline grinding machine
US2631501A Broaching machine
US2538844A Broaching tool
US2652665A Involute checking fixture and tailstock mounting therefor
US2619231A Universal oil filter mounting for hydraulic machine tools
US2502907A Cooling system for vertical broaching machines
US2580868A Directional and pressure control valve for hydraulic straightening presses
US2529705A Broaching machine
US2517104A Helical broaching fixture
US2522712A Machine for broaching internal gears
US2515508A Machine for burnishing and sizing openings