Granted Patent
Utility
US 4,867,489 · App. 07/099,186
Tube fitting
Inventor:
Hiralal V. Patel
Patented Case
View Patent ↗
Granted: Sep 19, 1989
Filed: Sep 21, 1987
Inventor
Hiralal V. Patel
Assignee (at issue)
Parker-Hannifin 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.