Granted Patent
Utility
US 5,332,013 · App. 07/850,668
Unmanned conveying device in clean room
Inventors:
Masanao Sugita, Hitoshi Kawano, Teppei Yamashita
Patented Case
View Patent ↗
Granted: Jul 26, 1994
Filed: Mar 13, 1992
Inventors
Masanao Sugita
Hitoshi Kawano
Teppei Yamashita
Assignee (at issue)
Shinko Electric Co., Ltd.
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.