Granted Patent
Utility
US 4,901,853 · App. 07/358,404
Substrate transport box
Inventor:
Christopher J. Maryatt
Patented Case
View Patent ↗
Granted: Feb 20, 1990
Filed: May 26, 1989
Inventor
Christopher J. Maryatt
Assignee (at issue)
Avantek, 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.