Granted Patent
Utility
US 4,685,206 · App. 06/803,437
Positioning apparatus for a circular substrate
Inventors:
Jiro Kobayashi, Koichi Yoshikawa
Patented Case
View Patent ↗
Granted: Aug 11, 1987
Filed: Dec 2, 1985
Inventors
Jiro Kobayashi
Koichi Yoshikawa
Assignee (at issue)
Nippon Kogaku K.K.
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.