Granted Patent
Utility
US 4,845,895 · App. 07/005,095
Internal grinding machine
Inventors:
Hiroyuki Kihara, Isaoi Ogawa
Patented Case
View Patent ↗
Granted: Jul 11, 1989
Filed: Jan 20, 1987
Inventors
Hiroyuki Kihara
Isaoi Ogawa
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.