Granted Patent
Utility
US 5,987,673 · App. 09/051,864
Undercarriage extension
Inventor:
Glenn S. Smith
Patented Case
View Patent ↗
Granted: Nov 23, 1999
Filed: Apr 21, 1998
Inventor
Glenn S. Smith
Assignee (at issue)
Ferno-Washington, 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.