Granted Patent
Utility
US 6,772,500 · App. 09/989,834
Method of forming holes for permanent fasteners
Inventor:
Ralph Luhm
Patented Case
View Patent ↗
Granted: Aug 10, 2004
Filed: Nov 20, 2001
Inventor
Ralph Luhm
Assignee (at issue)
ALLFAST FASTENING SYSTEMS
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.