Granted Patent
Utility
US 4,982,833 · App. 07/532,120
Exit rail assembly for helical conveyor belts
Inventors:
Michael R. Straight, Gerald C. Roinestad
Patented Case
View Patent ↗
Granted: Jan 8, 1991
Filed: Jun 1, 1990
Inventors
Michael R. Straight
Gerald C. Roinestad
Assignee (at issue)
Ashworth Bros., Inc.
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.