Granted Patent
Utility
US 4,933,714 · App. 07/368,978
Apparatus and method for reproducing a pattern in an annular area
Inventors:
Jere D. Buckley, Daniel N. Galburt, Charles Karatzas, Harry Sewell, Frits Zernike
Patented Case
View Patent ↗
Granted: Jun 12, 1990
Filed: Jun 20, 1989
Inventors
Jere D. Buckley
Daniel N. Galburt
Charles Karatzas
Harry Sewell
Frits Zernike
Assignee (at issue)
PerkinElmer, Inc.
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.