Granted Patent
Utility
US 4,537,670 · App. 06/603,618
Apparatus for making a stamping master for video disk replication
Inventor:
David Strand
Patented Case
View Patent ↗
Granted: Aug 27, 1985
Filed: Apr 25, 1984
Inventor
David Strand
Assignee (at issue)
Energy Conversion Devices, 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.