Granted Patent
Utility
US 4,856,871 · App. 07/091,182
Replaceable laser and lens assembly
Inventor:
Glen J. Van Sant
Patented Case
View Patent ↗
Granted: Aug 15, 1989
Filed: Aug 31, 1987
Inventor
Glen J. Van Sant
Assignee (at issue)
General Electric Company
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.