Granted Patent
Utility
US 5,255,496 · App. 07/829,053
Device for transferring objects against the current of a gas stream
Inventor:
Jean-Francois Gregoire
Patented Case
View Patent ↗
Granted: Oct 26, 1993
Filed: Feb 7, 1992
Inventor
Jean-Francois Gregoire
Assignee (at issue)
Kerplas S.N.C.
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.