Granted Patent
Utility
US 4,728,246 · App. 06/863,963
Wafer boat transfer tool
Inventor:
William R. Mello
Patented Case
View Patent ↗
Granted: Mar 1, 1988
Filed: May 16, 1986
Inventor
William R. Mello
Assignee (at issue)
Thermco Systems, 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.