Granted Patent
Utility
US 4,617,744 · App. 06/813,325
Elongated slot dryer for wet particulate material
Inventors:
Mark A. Siddoway, James A. Salter, Robert P. Deschner
Patented Case
View Patent ↗
Granted: Oct 21, 1986
Filed: Dec 24, 1985
Inventors
Mark A. Siddoway
James A. Salter
Robert P. Deschner
Assignee (at issue)
SHELL OIL 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.