Granted Patent
Utility
US 4,710,029 · App. 06/796,785
Projection type exposing apparatus
Inventor:
Kinya Katoh
Patented Case
View Patent ↗
Granted: Dec 1, 1987
Filed: Nov 12, 1985
Inventor
Kinya Katoh
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.