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Earl E. Seppala

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  • New Castle, DE, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Firearm gas relief mechanism
    • Patent number 4,872,392
    • Issue date Oct 10, 1989
    • Remington Arms Company
    • Thomas P. Powers
    • F41 - WEAPONS
  • Information Patent Grant

    Window regulator
    • Patent number 4,433,509
    • Issue date Feb 28, 1984
    • E. I. Du Pont de Nemours and Company
    • Earl E. Seppala
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Apparatus for and method of coupling shafts
    • Patent number 4,378,220
    • Issue date Mar 29, 1983
    • E. I. Du Pont de Nemours and Company
    • Earl E. Seppala
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...