Granted Patent
Utility
US 4,218,832 · App. 06/033,732
Apparatus for processing wood products using heat from a boiler for indirectly heating drying gas
Inventor:
Vernon Daniels
Patented Case
View Patent ↗
Granted: Aug 26, 1980
Filed: Apr 27, 1979
Inventor
Vernon Daniels
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.