Relief spring

Patents Grantslast 30 patents

  • Information Patent Grant

    Power driven valve actuator

    • Patent number 4,739,925
    • Issue date Apr 26, 1988
    • Sparco, Inc.
    • Luigi Cazzaniga
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    3143620

    • Patent number 3,143,620
    • Issue date Aug 4, 1964
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    3065913

    • Patent number 3,065,913
    • Issue date Nov 27, 1962
    • F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
  • Information Patent Grant

    3054273

    • Patent number 3,054,273
    • Issue date Sep 18, 1962
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Grant

    2993646

    • Patent number 2,993,646
    • Issue date Jul 25, 1961
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    2924975

    • Patent number 2,924,975
    • Issue date Feb 16, 1960
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    2901212

    • Patent number 2,901,212
    • Issue date Aug 25, 1959
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    2839039

    • Patent number 2,839,039
    • Issue date Jun 17, 1958
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    2778576

    • Patent number 2,778,576
    • Issue date Jan 22, 1957
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    2774539

    • Patent number 2,774,539
    • Issue date Dec 18, 1956
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    2726041

    • Patent number 2,726,041
    • Issue date Dec 6, 1955
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    2631781

    • Patent number 2,631,781
    • Issue date Mar 17, 1953
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    2303029

    • Patent number 2,303,029
    • Issue date Nov 24, 1942
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    2237399

    • Patent number 2,237,399
    • Issue date Apr 8, 1941
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    2237398

    • Patent number 2,237,398
    • Issue date Apr 8, 1941
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    2233117

    • Patent number 2,233,117
    • Issue date Feb 25, 1941
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    2064887

    • Patent number 2,064,887
    • Issue date Dec 22, 1936
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Grant

    2008400

    • Patent number 2,008,400
    • Issue date Jul 16, 1935
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    1992048

    • Patent number 1,992,048
    • Issue date Feb 19, 1935
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    1991392

    • Patent number 1,991,392
    • Issue date Feb 19, 1935
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    1983821

    • Patent number 1,983,821
    • Issue date Dec 11, 1934
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    1936325

    • Patent number 1,936,325
    • Issue date Nov 21, 1933
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    1884286

    • Patent number 1,884,286
    • Issue date Oct 25, 1932
    • F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
  • Information Patent Grant

    1884794

    • Patent number 1,884,794
    • Issue date Oct 25, 1932
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    1878496

    • Patent number 1,878,496
    • Issue date Sep 20, 1932
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    1815030

    • Patent number 1,815,030
    • Issue date Jul 21, 1931
    • F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
  • Information Patent Grant

    1770339

    • Patent number 1,770,339
    • Issue date Jul 8, 1930
    • F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
  • Information Patent Grant

    1752390

    • Patent number 1,752,390
    • Issue date Apr 1, 1930
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    1742091

    • Patent number 1,742,091
    • Issue date Dec 31, 1929
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    1694641

    • Patent number 1,694,641
    • Issue date Dec 11, 1928
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents