JPS548351A
Expired / Lapsed
JP
⏱️ 0.0 years remaining
Abonrmal alarm device for elevator
Assignee: Mitsubishi Electric Corp
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Filing: 1977-06-22
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Granted: —
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Expires: 1997-06-22
Abstract
Abstract PURPOSE: To generate no trouble when telephoning, by controlling ringing sound from an alarm device during the time when speaking by telephone with the outside of a cage through a telephone circuit by means of an automatic informing device when an elevator is abnormal. COPYRIGHT: (C)1979,JPO&Japio
Inventors
- 👤 Kiyoshi Kikuchi
- 👤 Kiyoshi Kamiya
Bibliographic Details
Application Number
—
Jurisdiction
JP
Data Source
google_patents
Last Synchronized
2026-10-28 23:04
CPC Classifications
—
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