Patents by Inventor Merrill L. Cohen

Merrill L. Cohen 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).

  • Automotive oil system
    Patent number: 4296838
    Abstract: System for changing motor oil, consisting of two related containers, one to receive used oil drained from the vehicle, and the other carrying new oil for introduction into the vehicle.
    Type: Grant
    Filed: July 27, 1979
    Date of Patent: October 27, 1981
    Inventor: Merrill L. Cohen