Granted Patent
Utility
US 5,257,992 · App. 07/841,426
Micromanipulator apparatus for surgical laser
Inventors:
Robert Bernhard Estrada, David Trost
Patented Case
View Patent ↗
Granted: Nov 2, 1993
Filed: Feb 26, 1992
Inventors
Robert Bernhard Estrada
David Trost
Assignee (at issue)
Coherent, 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.