Granted Patent
Utility
US 4,287,256 · App. 06/155,999
Wafer and boule protection during the blade return stroke of a wafer saw
Inventor:
Robert R. Demers
Patented Case
View Patent ↗
Granted: Sep 1, 1981
Filed: May 30, 1980
Inventor
Robert R. Demers
Assignee (at issue)
RCA 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.