Granted Patent
Utility
US 5,197,524 · App. 07/833,833
Apparatus and method for feeding steam into the hollow longitudinal staves of a debarking drum
Inventors:
Ian J. H. Clarke-Pounder, Donald Bryce Johnson
Patented Case
View Patent ↗
Granted: Mar 30, 1993
Filed: Feb 4, 1992
Inventors
Ian J. H. Clarke-Pounder
Donald Bryce Johnson
Assignee (at issue)
Ingersoll-Rand 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.