Granted Patent
Utility
US 4,648,712 · App. 06/698,226
Apparatus and method for analyzing parameters of a fibrous substrate
Inventor:
Irving R. Brenholdt
Patented Case
View Patent ↗
Granted: Mar 10, 1987
Filed: Feb 4, 1985
Inventor
Irving R. Brenholdt
Assignee (at issue)
Champion International Corporation 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.