AT338881B
Expired / Lapsed
AT
⏱️ 0.0 years remaining
CIRCUIT ARRANGEMENT FOR A VOICE PROTECTED RECEIVING DEVICE FOR MULTI-FREQUENCY CODE SELECTION IN REMOTE COMMUNICATION DEVICES, IN PARTICULAR TELEPHONE SWITCHING SYSTEMS
Assignee: Kapsch Telephon Telegraph
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Filing: 1974-10-10
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Granted: 1977-09-26
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Expires: 1994-10-10
Abstract
No abstract record available.
Inventors
- 👤 Johann Ing Ernstthaler
Bibliographic Details
Application Number
—
Jurisdiction
AT
Data Source
google_patents
Last Synchronized
2026-11-05 20:06
CPC Classifications
H; H04; H04Q; H04Q1/00; H04Q1/18; H04Q1/30; H04Q1/44; H04Q1/444; H04Q1/46
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References Cited (Backward Citations)
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