Granted Patent
Utility
US 6,648,585 · App. 10/012,877
Retractable device for flipping a workpiece, Particularly a mattress of other cushion structure
Inventors:
Paul Block, Charles Block
Patented Case
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Granted: Nov 18, 2003
Filed: Oct 22, 2001
Inventors
Paul Block
Charles Block
Assignee (at issue)
Galkin Automated Products 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.