Patent CA657057A successfully refreshed from Google Patents.
CA657057A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Electric earth leakage detector
Assignee: Siemens and General Electric Railway Signal Co Ltd
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Filing: —
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Granted: 1963-02-05
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Expires: 1980-02-05
Abstract
No abstract record available.
Inventors
- 👤 D. Austin Thomas
- 👤 J. N. Riddle Hubert
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-10-29 14:54
CPC Classifications
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Claims Analysis
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References Cited (Backward Citations)
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