David A. Leidel

Person

  • Whitinsville, MA, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Composite diffuser assembly

    • Patent number 4,865,778
    • Issue date Sep 12, 1989
    • Aeration Engineering Resources
    • David A. Leidel
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL