Granted Patent
Utility
US 4,880,308 · App. 07/176,760
Aligning apparatus
Inventor:
Hiroshi Shirasu
Patented Case
View Patent ↗
Granted: Nov 14, 1989
Filed: Apr 1, 1988
Inventor
Hiroshi Shirasu
Assignee (at issue)
NIKON CORPORATION
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.