Granted Patent
Utility
US 6,554,254 · App. 09/882,266
Hoist with curved frame members
Inventor:
Jan Vetesnik
Patented Case
View Patent ↗
Granted: Apr 29, 2003
Filed: Jun 18, 2001
Inventor
Jan Vetesnik
Assignee (at issue)
Unique Concepts Ltd.
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.