Patents by Inventor R. P. Grogan

R. P. Grogan 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).

  • Liquid pump dispenser having a stationary spout
    Patent number: 5181635
    Abstract: A liquid pump dispenser has a stationary spout, a fixed piston and a reciprocating cylinder therewith defining a variable volume pump chamber. The dispenser has container venting and pump priming features, and includes an inlet/discharge valve housing. The dispenser has a reduced number of parts for simplicity and economy.
    Type: Grant
    Filed: May 31, 1991
    Date of Patent: January 26, 1993
    Assignee: Calmar Inc.
    Inventors: Mark A. Balderrama, R. P. Grogan