John M. Patty

Person

  • Berkeley, CA, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Weight belt for underwater diving

    • Patent number 4,732,305
    • Issue date Mar 22, 1988
    • Diver Designed Equipment
    • William L. Courtney
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT