Granted Patent
Utility
US 6,809,513 · App. 10/383,972
Rotary position sensor having waterproof, explosion-protective structure
Inventors:
Kyuichiro Terui, Hirofumi Okumura
Patented Case
View Patent ↗
Granted: Oct 26, 2004
Filed: Mar 7, 2003
Inventors
Kyuichiro Terui
Hirofumi Okumura
Assignee (at issue)
ALPS ELECTRIC CO., LTD.
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.