Patents by Inventor Douglas E. McLaughlin

Douglas E. McLaughlin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Swabbing apparatus
    Patent number: 4771675
    Abstract: A swabbing apparatus has a plurality of swab cups molded on a single core, with at least two swab cups having a different fluid load carrying capacity, so that the swabbing apparatus will have a relatively broad fluid load carrying capacity. Each swab cup has one or more lips with the fluid load carrying capacity of a swab cup being determined primarily by lip thickness.
    Type: Grant
    Filed: November 26, 1986
    Date of Patent: September 20, 1988
    Assignee: Petro Rubber Hi-Tec, Inc.
    Inventors: James E. Grauer, Douglas E. McLaughlin