Granted Patent
Utility
US 6,112,474 · App. 09/014,391
Retractable web column
Inventor:
David L. Paine
Patented Case
View Patent ↗
Granted: Sep 5, 2000
Filed: Jan 27, 1998
Inventor
David L. Paine
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.