Granted Patent
Utility
US 5,224,584 · App. 07/893,801
Expandable powered conveyors
Inventors:
John W. Best, Bobby K. Flippo, Paul W. Irby
Patented Case
View Patent ↗
Granted: Jul 6, 1993
Filed: Jun 4, 1992
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.