Granted Patent
Utility
US 3,967,007 · App. 05/521,252
Method for producing distressed wood
Inventor:
Hong Man Lee
Patented Case
View Patent ↗
Granted: Jun 29, 1976
Filed: Nov 6, 1974
Inventor
Hong Man Lee
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.