Granted Patent
Utility
US 4,915,680 · App. 07/260,644
Floating adustable gusseting wheel
Inventors:
Robert J. Nestle, David A. Barker
Patented Case
View Patent ↗
Granted: Apr 10, 1990
Filed: Oct 21, 1988
Inventors
Robert J. Nestle
David A. Barker
Assignee (at issue)
THE DOW CHEMICAL COMPANY
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.