Patents by Inventor David W. Stene

David W. Stene 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).

  • Filter cartridge retention system
    Patent number: 5611922
    Abstract: A filter cartridge retention system for releasably retaining a filter cartridge in an operational position in fluid communication with an exhaust port in a filtration system and a released position for removal of the cartridge from the filtration system.
    Type: Grant
    Filed: August 16, 1993
    Date of Patent: March 18, 1997
    Assignee: Donaldson Company
    Inventor: David W. Stene