Granted Patent
Utility
US 4,762,051 · App. 06/886,460
Single acting pump with double acting drive
Inventors:
Dragan Besic, Wilbur C. Smith
Patented Case
View Patent ↗
Granted: Aug 9, 1988
Filed: Jul 17, 1986
Inventors
Dragan Besic
Wilbur C. Smith
Assignee (at issue)
Dresser Industries, Inc.
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.