Granted Patent
Utility
US 4,877,437 · App. 07/187,837
Vacuum platen for sharp bends
Inventor:
David B. Nitschke
Patented Case
View Patent ↗
Granted: Oct 31, 1989
Filed: Apr 29, 1988
Inventor
David B. Nitschke
Assignee (at issue)
Glasstech International L.P.
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.