Willard Q. Haak

Person

  • Peoria, IL, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Dual radial piston pump or motor

    • Patent number 4,064,790
    • Issue date Dec 27, 1977
    • Caterpillar Tractor Co.
    • Willard Q. Haak
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES