Granted Patent
Utility
US 5,415,531 · App. 08/223,652
Piston pump for fluent materials
Inventor:
James E. Cavanaugh
Patented Case
View Patent ↗
Granted: May 16, 1995
Filed: Apr 6, 1994
Inventor
James E. Cavanaugh
Assignee (at issue)
Binks Manufacturing Company
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.