JPS547291A
Expired / Lapsed
JP
⏱️ 0.0 years remaining
Electronic watch
Assignee: Seiko Epson Corp
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Filing: 1977-06-20
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Granted: —
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Expires: 1997-06-20
Abstract
Abstract PURPOSE: To lengthen the life of an electronic watch by providing an atomic battery which makes use of a radioactive isotope to an electronic watch, and, further, to utilize the luminescence of a fluorescent substance irradiated with the energy for nighttime illumination. COPYRIGHT: (C)1979,JPO&Japio
Inventors
- 👤 Tsukasa Shimizu
- 👤 Kuniharu Yamada
Bibliographic Details
Application Number
—
Jurisdiction
JP
Data Source
google_patents
Last Synchronized
2026-11-03 04:29
CPC Classifications
—
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