Granted Patent
Utility
US 4,974,370 · App. 07/280,932
Lapping and polishing machine
Inventor:
Anatoly Gosis
Patented Case
View Patent ↗
Granted: Dec 4, 1990
Filed: Dec 7, 1988
Inventor
Anatoly Gosis
Assignee (at issue)
Federal Signal 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.