John F. Kopera

Person

  • Troy, MI, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Track tension control

    • Patent number 3,930,553
    • Issue date Jan 6, 1976
    • The United States of America as represented by the Secretary of the Army
    • John F. Kopera
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS