Patents by Inventor Abram J. Wiser

Abram J. Wiser 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).

  • Dust filter
    Patent number: 3979194
    Abstract: An efficient unit for placement on the exhaust cylinder of a dust collector, etc., the unit having a cylindrical filter through which the air passes and deposits dust thereon, the latter being removed by brushes for gravity deposit in an annular trough through which a scraper passes to move the dust particles to an exhaust tube.
    Type: Grant
    Filed: March 4, 1975
    Date of Patent: September 7, 1976
    Inventor: Abram J. Wiser