Granted Patent
Utility
US 4,899,719 · App. 07/223,512
Apparatus for collecting wafers
Inventors:
Seiichi Abe, Yoshitaka Shiratori, Tomoyoshi Sakamoto
Patented Case
View Patent ↗
Granted: Feb 13, 1990
Filed: Jul 22, 1988
Inventors
Seiichi Abe
Yoshitaka Shiratori
Tomoyoshi Sakamoto
Assignee (at issue)
Mitsubishi Kinzoku Kabushiki Kaisha
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.