Granted Patent
Utility
US 6,425,459 · App. 09/860,928
Aerial work platform apparatus with anti-tipping supplement
Inventor:
Richard Keefer
Patented Case
View Patent ↗
Granted: Jul 30, 2002
Filed: May 18, 2001
Inventor
Richard Keefer
Assignee (at issue)
Snorkel International, 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.