Patent GB727321A successfully refreshed from Google Patents.
GB1442883A
Expired / Lapsed
GB
⏱️ 0.0 years remaining
Telephone system with special kinds of telephone sets
Assignee: International Standard Electric Corp
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Filing: 1974-10-03
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Granted: —
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Expires: 1994-10-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
GB
Data Source
google_patents
Last Synchronized
2026-10-23 06:33
CPC Classifications
G; G07; G07F; G07F17/00; G07F17/0014; G06; G06Q; G06Q20/00; G06Q20/30; G06Q20/34; G06Q20/342; G07F7/00; G07F7/02; G07F7/025; H; H04; H04M; H04M15/00; H04M15/28; H04M17/00; H04M17/02; H04M17/023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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