Granted Patent
Utility
US 5,222,605 · App. 07/818,048
Automatic particle size analyzer using stacked sieves
Inventor:
Glenn J. Pogue
Patented Case
View Patent ↗
Granted: Jun 29, 1993
Filed: Jan 8, 1992
Inventor
Glenn J. Pogue
Assignee (at issue)
ROTEX, INC.
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.