Granted Patent
Utility
US 4,699,392 · App. 06/855,337
Carriage
Inventor:
Chol Ku
Patented Case
View Patent ↗
Granted: Oct 13, 1987
Filed: Apr 24, 1986
Inventor
Chol Ku
Assignee (at issue)
Cosco, 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.