Granted Patent
Utility
US 4,516,852 · App. 06/568,764
Method and apparatus for measuring intensity variation in a light source
Inventors:
Raymond Liu, David A. Markle
Patented Case
View Patent ↗
Granted: May 14, 1985
Filed: Jan 6, 1984
Inventors
Raymond Liu
David A. Markle
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.