Granted Patent
Utility
US 6,006,949 · App. 09/006,121
Manually operated reciprocating liquid pump with sealing vent opening
Inventors:
Donald D. Foster, John P. Hinson
Patented Case
View Patent ↗
Granted: Dec 28, 1999
Filed: Jan 12, 1998
Inventors
Donald D. Foster
John P. Hinson
Assignee (at issue)
Continental Sprayers International, 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.