Granted Patent
Utility
US 5,089,683 · App. 07/584,099
Device for producing a constant length laser beam and method for producing it
Inventors:
Gerald H. Stephenson, Russell Morgan
Patented Case
View Patent ↗
Granted: Feb 18, 1992
Filed: Sep 18, 1990
Inventors
Gerald H. Stephenson
Russell Morgan
Assignee (at issue)
Union Carbide Coatings Service Technology Corporation
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.