Granted Patent
Utility
US 5,487,692 · App. 08/315,718
Expandable wheel assembly
Inventors:
Kevin B. Mowrer, Robert L. Beck
Patented Case
View Patent ↗
Granted: Jan 30, 1996
Filed: Sep 30, 1994
Inventors
Kevin B. Mowrer
Robert L. Beck
Assignee (at issue)
Tonka 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.