Granted Patent
Utility
US 4,203,229 · App. 05/838,561
Dryer system and method of controlling the same
Inventor:
Ronald W. Southworth
Patented Case
View Patent ↗
Granted: May 20, 1980
Filed: Oct 3, 1977
Inventor
Ronald W. Southworth
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.