Granted Patent
Utility
US 5,247,165 · App. 07/898,422
Displacement detecting apparatus using graduated linear scale
Inventors:
Akitaka Hiruta, Kayoko Taniguchi, Takao Yukawa
Patented Case
View Patent ↗
Granted: Sep 21, 1993
Filed: Jun 15, 1992
Inventors
Akitaka Hiruta
Kayoko Taniguchi
Takao Yukawa
Assignee (at issue)
SONY GROUP 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.