Keenan; John

Organization

  • EI
  • Business Address
    4200 EAST SKELLY DR STE 1000 TULSA OK 74135 9184911100
  • Mailing Address
    4200 EAST SKELLY DR STE 1000 TULSA OK 74135
  • State Location
    OK
  • State of Incorporation

Patents Grantslast 30 patents

  • Information Patent Grant

    Hopper device for tractor vehicles

    • Patent number 4,084,853
    • Issue date Apr 18, 1978
    • Keenan; Richard
    • Richard Keenan
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING

Patents Applicationslast 30 patents

Trademarklast 30 trademarks