Granted Patent
Utility
US 4,504,144 · App. 06/395,414
Simple electromechanical tilt and focus device
Inventor:
David Trost
Patented Case
View Patent ↗
Granted: Mar 12, 1985
Filed: Jul 6, 1982
Inventor
David Trost
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.