Granted Patent
Utility
US 4,410,468 · App. 06/280,923
Hot press-forging of an optical body with dynamic constraint by crystal powder
Inventor:
Herbert Packer
Patented Case
View Patent ↗
Granted: Oct 18, 1983
Filed: Jul 6, 1981
Inventor
Herbert Packer
Assignee (at issue)
The Harshaw Chemical 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.