Granted Patent
Utility
US 4,241,995 · App. 05/972,079
Apparatus for measuring amount of displacement
Inventor:
Akio Takahama
Patented Case
View Patent ↗
Granted: Dec 30, 1980
Filed: Dec 22, 1978
Inventor
Akio Takahama
Assignee (at issue)
Nippon Kogaku K.K.
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.