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SYMINGTON THOMAS H

Overview
  • Total Patents
    37
About

SYMINGTON THOMAS H has a total of 37 patent applications. Its first patent ever was published in 1901. It filed its patents most often in United States and Canada. Its main competitors in its focus markets transport are SYMINGTON T H CO, HENNESSEY JOHN J and BUCKEYE STEEL CASTINGS CO.

Patent filings in countries

World map showing SYMINGTON THOMAS Hs patent filings in countries
# Country Total Patents
#1 United States 21
#2 Canada 16

Patent filings per year

Chart showing SYMINGTON THOMAS Hs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Transport

Focus technologies

# Technology
#1 Rail vehicle suspensions
#2 Couplings
#3 Railway bodies

Top inventors

# Name Total Patents
#1 Symington Thomas H 37
#2 Drenning Percy R 2

Latest patents

Publication Filing date Title
US1292536A Plate-spring friction.
US1171557A Draft-support.
US1192582A Underframe-reinforce.
US1167130A Draft-seat.
CA161703A Center sill reinforcement
CA161702A Car end
CA159081A Bearing
US1125917A End construction.
US1178689A Antifriction side bearing.
US1097740A Cheek-plate for draft-gear.
CA152107A Side bearing
US1103632A Spring-box.
US1116645A Side bearing.
CA141273A Draft gear
CA141272A Draft gear
US1115747A Draft-gear.
CA141922A Forging method
US1004498A Friction-gear for cars.
US1004497A Friction draft and buffing gear.
US938523A Torsion-lid for journal-boxes.