Granted Patent
Utility
US 5,456,347 · App. 08/341,462
Controllably powered roller conveyors
Inventors:
John W. Best, Bobby K. Flippo, Paul W. Irby
Patented Case
View Patent ↗
Granted: Oct 10, 1995
Filed: Nov 17, 1994
Inventors
John W. Best
Bobby K. Flippo
Paul W. Irby
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.