Granted Patent
Utility
US 5,497,886 · App. 08/046,319
Screening apparatus for papermaking pulp
Inventors:
Douglas L. G. Young, Antoine G. Abdulmassih
Patented Case
View Patent ↗
Granted: Mar 12, 1996
Filed: Apr 15, 1993
Inventors
Douglas L. G. Young
Antoine G. Abdulmassih
Assignee (at issue)
Ingersoll-Rand Company
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.