TREA

David R. Friswell

Follow

Person

  • Holliston, MA, US
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Laboratory evaporation apparatus
    • Patent number 5,100,623
    • Issue date Mar 31, 1992
    • Zymark Corporation
    • David R. Friswell
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Laboratory evaporation
    • Patent number 4,707,452
    • Issue date Nov 17, 1987
    • Zymark Corporation
    • David R. Friswell
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Control of laboratory evaporation
    • Patent number 4,600,473
    • Issue date Jul 15, 1986
    • Zymark Corporation
    • David R. Friswell
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Bubble sensor and method
    • Patent number 4,117,727
    • Issue date Oct 3, 1978
    • David R. Friswell
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Novel seal and apparatus including same
    • Patent number 4,094,195
    • Issue date Jun 13, 1978
    • Waters Associates, Inc.
    • David R. Friswell
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Sample injection with automatic cleaning of sampling conduit
    • Patent number 4,094,196
    • Issue date Jun 13, 1978
    • Waters Associates, Inc.
    • David R. Friswell
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Low loss sample bottle assembly
    • Patent number 4,094,641
    • Issue date Jun 13, 1978
    • Waters Associates, Inc.
    • David R. Friswell
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL