Granted Patent
Utility
US 6,725,516 · App. 10/430,307
Rubber ring coupling apparatus
Inventor:
Robert B. Pan
Patented Case
View Patent ↗
Granted: Apr 27, 2004
Filed: May 7, 2003
Inventor
Robert B. Pan
Assignee (at issue)
Silitek 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.