Granted Patent
Utility
US 4,640,580 · App. 06/630,459
Optical chopper with high rate of focus dither
Inventor:
Eugene R. Schlesinger
Patented Case
View Patent ↗
Granted: Feb 3, 1987
Filed: Jul 13, 1984
Inventor
Eugene R. Schlesinger
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.