Granted Patent
Utility
US 6,554,320 · App. 09/896,614
Quick connect/disconnect coupling
Inventor:
William L. Cresswell
Patented Case
View Patent ↗
Granted: Apr 29, 2003
Filed: Jun 29, 2001
Inventor
William L. Cresswell
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.