Granted Patent
Utility
US 5,339,030 · App. 07/948,309
Multi-displacement detecting apparatus
Inventor:
Yasukazu Hayashi
Patented Case
View Patent ↗
Granted: Aug 16, 1994
Filed: Sep 22, 1992
Inventor
Yasukazu Hayashi
Assignee (at issue)
Okuma 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.