Granted Patent
Utility
US 6,388,613 · App. 09/537,941
Portable GPS type distance/speed meter capable of selectively using doppler speed measuring method
Inventors:
Hideaki Nagatsuma, Kazumi Sakumoto, Hiroshi Odagiri
Patented Case
View Patent ↗
Granted: May 14, 2002
Filed: Mar 29, 2000
Inventors
Hideaki 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.