Granted Patent
Utility
US 4,248,346 · App. 06/007,300
Shipping container for semiconductor substrate wafers
Inventor:
Douglas M. Johnson
Patented Case
View Patent ↗
Granted: Feb 3, 1981
Filed: Jan 29, 1979
Inventor
Douglas M. Johnson
Assignee (at issue)
Fluoroware, 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.