TREA

Ewald Harr

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  • Schwaigern 2, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Smooth rimmed differential gear
    • Patent number 5,495,779
    • Issue date Mar 5, 1996
    • Ewald Harr
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Piston power generating and working machine
    • Patent number 4,132,118
    • Issue date Jan 2, 1979
    • Ewald Harr
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES