Granted Patent
Utility
US 4,648,213 · App. 06/716,955
Compact grinder machine
Inventor:
Tetsuya Nagata
Patented Case
View Patent ↗
Granted: Mar 10, 1987
Filed: Mar 28, 1985
Inventor
Tetsuya Nagata
Assignee (at issue)
Seiko Seiki Kabushiki Kaisha
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.