Granted Patent
Utility
US 5,494,299 · App. 08/200,012
Temperature and pressure resistant rotating seal construction for a pump
Inventor:
Robert E. Rockwood
Patented Case
View Patent ↗
Granted: Feb 27, 1996
Filed: Feb 22, 1994
Inventor
Robert E. Rockwood
Assignee (at issue)
Evironamics Corporation
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.