Granted Patent
Utility
US 4,741,929 · App. 07/027,699
Roll-coating method and apparatus
Inventor:
Donald A. Kossuth
Patented Case
View Patent ↗
Granted: May 3, 1988
Filed: Mar 19, 1987
Inventor
Donald A. Kossuth
Assignee (at issue)
National Gypsum 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.