Granted Patent
Utility
US 4,500,407 · App. 06/515,247
Disk or wafer handling and coating system
Inventors:
Donald R. Boys, Walter E. Graves
Patented Case
View Patent ↗
Granted: Feb 19, 1985
Filed: Jul 19, 1983
Inventors
Donald R. Boys
Walter E. Graves
Assignee (at issue)
Varian, 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.