Granted Patent
Utility
US 4,977,575 · App. 07/398,005
Adjustable aperture comprising a shape memory alloy and laser using same
Inventor:
Mark Ortiz
Patented Case
View Patent ↗
Granted: Dec 11, 1990
Filed: Aug 24, 1989
Inventor
Mark Ortiz
Assignee (at issue)
Spectra-Physics, 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.