Granted Patent
Utility
US 5,632,371 · App. 08/349,544
Expandable redundantly powered conveyors
Inventors:
John W. Best, Bob K. Flippo, James D. Walker, Gary D. Carter
Patented Case
View Patent ↗
Granted: May 27, 1997
Filed: Dec 5, 1994
Inventors
John W. Best
Bob K. Flippo
James D. Walker
Gary D. Carter
Assignee (at issue)
Northstar Industries, 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.