Granted Patent
Utility
US 5,409,028 · App. 08/296,476
Front frame lifter for a walking supporter
Inventor:
Daniel Lee
Patented Case
View Patent ↗
Granted: Apr 25, 1995
Filed: Aug 26, 1994
Inventor
Daniel Lee
Assignee (at issue)
APEX MEDICAL CORP.
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.