Granted Patent
Utility
US 6,030,280 · App. 08/899,180
Apparatus for holding workpieces during lapping, honing, and polishing
Inventor:
Clinton O. Fruitman
Patented Case
View Patent ↗
Granted: Feb 29, 2000
Filed: Jul 23, 1997
Inventor
Clinton O. Fruitman
Assignee (at issue)
SPEEDFAM CO., LTD.
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.