Granted Patent
Utility
US 6,131,532 · App. 09/008,196
Inflatable sailboat
Inventors:
William K. Winner, David C. Johnson
Patented Case
View Patent ↗
Granted: Oct 17, 2000
Filed: Jan 15, 1998
Inventors
William K. Winner
David C. Johnson
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.