CH217355A
Expired / Lapsed
CH
⏱️ 0.0 years remaining
Device with digits visible in the dark on the number dialing device of a telephone set.
Assignee: Roemer & Co Tech Verwertungs O
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Filing: 1941-02-09
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Granted: —
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Expires: 1961-02-09
Abstract
No abstract record available.
Inventors
- 👤 Roemer Co Technische Verw Tevo
Bibliographic Details
Application Number
—
Jurisdiction
CH
Data Source
google_patents
Last Synchronized
2026-11-02 20:37
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/02; H04M1/22; F; F21; F21V; F21V9/00; F21V9/30
Claims Analysis
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References Cited (Backward Citations)
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