Tatsuo Sumida

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Iruma-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Electronic timepiece
- Patent number 9,010,997
- Issue date Apr 21, 2015
- Citizen Holdings Co., Ltd.
- Tatsuo Sumida
- G04 - HOROLOGY
Information Patent Grant
Radio-controlled timepiece and method of assembling the same
- Patent number 8,345,514
- Issue date Jan 1, 2013
- Citizen Holdings Co., Ltd.
- Tatsuo Sumida
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC

Patents Applicationslast 30 patents

Information Patent Application
ELECTRONIC TIMEPIECE
- Publication number 20120300597
- Publication date Nov 29, 2012
- CITIZEN WATCH CO., LTD.
- Tatsuo Sumida
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Application
RADIO-CONTROLLED TIMEPIECE AND METHOD OF ASSEMBLING THE SAME
- Publication number 20100097895
- Publication date Apr 22, 2010
- Tatsuo Sumida
- G04 - HOROLOGY