Granted Patent
Utility
US 6,240,366 · App. 09/549,361
GPS reception ratio detecting apparatus and portable type distance/speed meter capable of indicating GPS signal receiving condition
Inventors:
Hideki Nagatsuma, Kazumi Sakumoto, Hiroshi Odagiri
Patented Case
View Patent ↗
Granted: May 29, 2001
Filed: Apr 14, 2000
Inventors
Hideki Nagatsuma
Kazumi Sakumoto
Hiroshi Odagiri
Assignee (at issue)
SEIKO INSTRUMENTS INC.
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.