Granted Patent
Utility
US 5,870,996 · App. 08/058,339
High-pressure dual-feed-rate injector pump with auxiliary spill port
Inventor:
Frank DeLuca
Patented Case
View Patent ↗
Granted: Feb 16, 1999
Filed: Apr 10, 1998
Inventor
Frank DeLuca
Assignee (at issue)
Alfred J. Buescher
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.