Granted Patent
Utility
US 4,189,896 · App. 05/936,863
Liquid impregnating system
Inventors:
Charles G. Kolbach, Edward M. Niedziejko, Joseph Paul Rizzo
Patented Case
View Patent ↗
Granted: Feb 26, 1980
Filed: Aug 25, 1978
Inventors
Charles G. Kolbach
Edward M. Niedziejko
Joseph Paul Rizzo
Assignee (at issue)
Scott Paper Limited
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.