Patent JPS5223640A successfully refreshed from Google Patents.
JPS5223640A
Expired / Lapsed
JP
⏱️ 0.0 years remaining
Protective relay
Assignee: Hitachi Ltd
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Filing: 1975-08-15
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Granted: —
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Expires: 1995-08-15
Abstract
Abstract PURPOSE: Mho relay having leaf-shape characteristic obtained not by phase comparator but by digital device. COPYRIGHT: (C)1977,JPO&Japio
Inventors
- 👤 Minoru Iwasaki
- 👤 Takayuki Matsuda
- 👤 Kazuhiro Sano
- 👤 Yoshiteru Miki
Bibliographic Details
Application Number
—
Jurisdiction
JP
Data Source
google_patents
Last Synchronized
2026-11-01 20:28
CPC Classifications
—
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