Howard J. Lettine

Person

  • Middletown, NY, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Oscillating steam engines

    • Patent number 4,114,514
    • Issue date Sep 19, 1978
    • Howard J. Lettine
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES