Richard O. Haarstad

Person

  • New Brighton, MN, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Secondary flow fluid filter

    • Patent number 4,496,460
    • Issue date Jan 29, 1985
    • Hydraulic Specialty Company
    • Richard O. Haarstad
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL