Granted Patent
Utility
US 6,305,922 · App. 08/377,924
Spiral fed multi-layer tubular die
Inventor:
Peter C. Gates
Patented Case
View Patent ↗
Granted: Oct 23, 2001
Filed: Jan 25, 1995
Inventor
Peter C. Gates
Assignee (at issue)
Davis-Standard, 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.