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SYMINGTON T H & SON INC

Overview
  • Total Patents
    63
About

SYMINGTON T H & SON INC has a total of 63 patent applications. Its first patent ever was published in 1926. It filed its patents most often in United States. Its main competitors in its focus markets transport, machines and civil engineering are ARNOLD STUCKI, MARMON HOLDINGS UK LTD and HEWITT HERBERT HILLS.

Patent filings in countries

World map showing SYMINGTON T H & SON INCs patent filings in countries
# Country Total Patents
#1 United States 63

Patent filings per year

Chart showing SYMINGTON T H & SON INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Symington Thomas H 31
#2 Drenning Percy R 19
#3 Martin Mark H 10
#4 Symington Thomas R 4
#5 Symington Edith R 3
#6 Casey Howard T 2
#7 Drenning Perey R 1
#8 Harrison Symington Thomas 1
#9 Dranning Percy R 1
#10 Ashley Sterling F 1

Latest patents

Publication Filing date Title
US2036859A Truck bolster
US2036858A Three-part truck
US1892859A Truck side frame
US1893475A Truck side frame
US1893476A Truck side frame
US1974135A Railway truck spring
US1958848A Railway truck spring
US1996644A Bolster for plankless trucks
US1905252A Railway car truck springs
US1930630A Railway car truck spring
US2012949A Truck side frame
US2087471A Six-wheel truck with side bearing rockers
US1929717A Lateral motion truck for electric cars
US1884372A Car floor cushioning means
US1925778A Journal box wedge and brass
US1985469A Railway car truck bolster
US1867654A Swing hanger for railway trucks
US1911331A Absorption shim for trucks
US1943492A Snubbed spring nest
US1982704A Railway car truck