Granted Patent
Utility
US 6,247,581 · App. 09/429,017
Adjustable length conveyor
Inventors:
Michael Oswald, Roger T. Foster
Patented Case
View Patent ↗
Granted: Jun 19, 2001
Filed: Oct 29, 1999
Inventors
Michael Oswald
Roger T. Foster
Assignee (at issue)
UNIVERSAL INSTRUMENTS CORPORATION
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.