Granted Patent
Utility
US 4,494,474 · App. 06/436,976
Fender and life ladder in one
Inventor:
Ryosuke Saito
Patented Case
View Patent ↗
Granted: Jan 22, 1985
Filed: Oct 27, 1982
Inventor
Ryosuke Saito
Assignee (at issue)
Sumitomo Gomu Kogyo Kabushiki Kaisha
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.