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SPENCER HEADS INC

Overview
  • Total Patents
    17
About

SPENCER HEADS INC has a total of 17 patent applications. Its first patent ever was published in 1976. It filed its patents most often in United States, Argentina and Australia. Its main competitors in its focus markets engines, pumps and turbines, machine tools and machines are ZHANG SHIGANG, K BJURO OBSHCHEGO MASH and MO G AVTOMOBILNO DOROZHNYJ I.

Patent filings per year

Chart showing SPENCER HEADS INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Spencer Boyd La Russell 5
#2 Spencer Boyd L 3
#3 Spencer B L R 1
#4 Spencer B 1
#5 La Russel Spencer B 1

Latest patents

Publication Filing date Title
NL7808333A Firing deck insert for IC engine - has circular plate insert with externally threaded boss providing axial location whilst permitting thermal expansion
PT68396A Firing deck insert for internal combustion engines
DK333478A Insert for a cylinder head of a combustion engine and procedure for installing the insert
DE2832691A1 Firing deck insert for IC engine - has circular plate insert with externally threaded boss providing axial location whilst permitting thermal expansion
ZM6978A1 Firing deck insert for internal combustion engines
AU3832878A Firing deck insert for internal combustion engines
FR2432092A1 Firing deck insert for IC engine - has circular plate insert with externally threaded boss providing axial location whilst permitting thermal expansion
MW1978A1 Firing deck insert for internal combustion engines
GB2025518A Cylinder head insert for internal combustion engines
US4229867A Method of repairing or modifying the firing deck of an internal combustion engine
US4112906A Firing deck insert for internal combustion engines