Granted Patent
Utility
US 4,356,941 · App. 06/150,778
Squeeze-type dispenser for powdered materials
Inventors:
John W. McRoskey, Delbert D. Swartz
Patented Case
View Patent ↗
Granted: Nov 2, 1982
Filed: May 19, 1980
Inventors
John W. McRoskey
Delbert D. Swartz
Assignee (at issue)
Republic Tool & Mfg. Corp.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.