Granted Patent
Utility
US 6,718,572 · App. 10/179,248
Invalid hoist
Inventor:
Philip Schroeter
Patented Case
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Granted: Apr 13, 2004
Filed: Jun 26, 2002
Inventor
Philip Schroeter
Assignee (at issue)
Arjo. Med. Aktiebolag Limited
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.