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MARTIN CHARLES F

Overview
  • Total Patents
    24
About

MARTIN CHARLES F has a total of 24 patent applications. Its first patent ever was published in 1905. It filed its patents most often in United States, Canada and Australia. Its main competitors in its focus markets mechanical elements, machines and civil engineering are MARTECH INTERNATIONAL, NINOMIYA IND and EKMAN THURE.

Patent filings in countries

World map showing MARTIN CHARLES Fs patent filings in countries

Patent filings per year

Chart showing MARTIN CHARLES Fs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Martin Charles F 24
#2 Dugan Frank C 1

Latest patents

Publication Filing date Title
AU5787400A Apparatus and method for connecting tubular members
US4676531A Apparatus for clamping and sealing the outer surface of a pipe and fittings for pipe connection
DK322684D0 Cane connection
US4516880A Underwater trenching apparatus
CA1130838A Apparatus for connecting tubular members
US4371198A Apparatus for connecting tubular members
US4411456A Apparatus, methods, and joints for connecting tubular members
US4291559A Sheave making apparatus and method
US4195865A Apparatus for connecting tubular members
US4183555A Methods and joints for connecting tubular members
US4022028A Submarine pipe trenching apparatus
US3429131A Pipeline trenching apparatus
US2820182A Photosensitive relay control circuit
US932305A Rail-joint.
US919611A Air-cooler.
US854956A Veterinary surgical instrument.
US854955A Veterinary tooth-cutter or dental float.
US800811A Veterinary tooth-cutter or dental float.
CA662072A Braking system for truck trailers