Granted Patent
Utility
US 5,358,037 · App. 08/038,835
Float operated pneumatic pump
Inventors:
David H. Edwards, Kevin L. Newcomer, K. Lynn Niehaus
Patented Case
View Patent ↗
Granted: Oct 25, 1994
Filed: Mar 29, 1993
Inventors
David H. Edwards
Kevin L. Newcomer
K. Lynn Niehaus
Assignee (at issue)
Q.E.D. Environmental Systems, 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.