Patent DE2547552A1 successfully refreshed from Google Patents.
CH191096A
Expired / Lapsed
CH
⏱️ 0.0 years remaining
AC signaling system.
Assignee: Bell Telephone Mfg
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Filing: 1934-10-22
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Granted: —
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Expires: 1954-10-22
Abstract
No abstract record available.
Inventors
- 👤 Telephone Manufacturing C Bell
Bibliographic Details
Application Number
—
Jurisdiction
CH
Data Source
google_patents
Last Synchronized
2026-10-22 21:08
CPC Classifications
—
Claims Analysis
Total Claims: 0
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