Granted Patent
Utility
US 5,769,428 · App. 08/741,516
Device for sealing a hood that protects a tumbling barrel
Inventor:
Mark Rypalla
Patented Case
View Patent ↗
Granted: Jun 23, 1998
Filed: Oct 31, 1996
Inventor
Mark Rypalla
Assignee (at issue)
A. Friedr. Flender Aktiengessellschaft
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.