Granted Patent
Utility
US 6,302,426 · App. 09/002,537
Strengthening rib
Inventor:
Martin L. Denny
Patented Case
View Patent ↗
Granted: Oct 16, 2001
Filed: Jan 2, 1998
Inventor
Martin L. Denny
Assignee (at issue)
DICO HOLDINGS LLC
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.