Granted Patent
Utility
US 5,072,887 · App. 07/467,701
Roll mill
Inventor:
Kelsey C. Thom, Jr.
Patented Case
View Patent ↗
Granted: Dec 17, 1991
Filed: Jan 19, 1990
Inventor
Kelsey C. Thom, Jr.
Assignee (at issue)
California Pellet Mill 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.