Robert K. Kelley

Person

  • Fort Worth, TX, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Pneumatic beam pumping unit

    • Patent number 3,971,213
    • Issue date Jul 27, 1976
    • Robert K. Kelley
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES