Granted Patent
Utility
US 4,628,833 · App. 06/835,822
Fluid bed hog fuel dryer
Inventors:
Michael O'Hagan, Richard D. Smith
Patented Case
View Patent ↗
Granted: Dec 16, 1986
Filed: Mar 3, 1986
Inventors
Michael O'Hagan
Richard D. Smith
Assignee (at issue)
Garrett Corporation
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.