Patent US3270139A successfully refreshed from Google Patents.
US3270139A
Expired / Lapsed
US
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Pentaconta semi-electronic system
Assignee: International Standard Electric Corp
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Filing: 1962-11-27
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Granted: 1966-08-30
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Expires: 1982-11-27
Abstract
No abstract record available.
Inventors
- 👤 Beumussa Henri
- 👤 Marty Pierre Rene Louis
- 👤 Kobus Stanislas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:11
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/42; H04Q3/54; H04Q3/0004; H04Q3/0016
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN AN AUTOMATIC TELEPHONE SWITCHING SYSTEM FOR EXTENDING CONNECTIONS BETWEEN CALLING AND CALLED LINES THROUGH A PLURALITY OF SWITCHING STAGES INTERCONNECTED BY JUNCTOR MEANS, EACH OF SAID SWITCHING STAGES COMPRISING TWO-WIRE TRANSMISSION PATHS, CONTROL MEANS OPERABLE RESPONSIVE TO DIRECTIVE SIGNALS FROM ANY SAID CALLING LINE FOR MARKING SAID CALLING LINE AND ANY CALLED LINE, MEANS FOR OPERATING SAID SWITCHING STAGES TO COMPLETE A CONNECTION OVER SAID TWO-WIRE TRANSMISSION PATH FROM THE SAID CALLING LINE TO SAID CALLED LINE, HOLDING MEANS IN SAID SWITCHING STAGES FOR MAINTAINING SAID ESTABLISHED CONNECTION INDEPENDENTLY OF HOLDING CONTROL, AND RELEASE MEANS RESPONSIVE TO THE TERMINATION OF SAID CONNECTION FOR CONTROLLING SAID HOLDING MEANS OVER SAID TWO-WIRE TRANSMISSION PATH FOR RELEASING SAID SWITCHING STAGES.
Claim 2
Dependent Claim
118 words
IN AN AUTOMATIC TELEPHONE SWITCHING SYSTEM FOR EXTENDING CONNECTIONS BETWEEN CALLING AND CALLED LINES THROUGH A PLURALITY OF SWITCHING STAGES INTERCONNECTED BY JUNCTOR MEANS, EACH OF SAID SWITCHING STAGES COMPRISING TWO-WIRE TRANSMISSION PATHS, CONTROL MEANS OPERABLE RESPONSIVE TO DIRECTIVE SIGNALS FROM ANY SAID CALLING LINE FOR MARKING SAID CALLING LINE AND ANY CALLED LINE, MEANS FOR OPERATING SAID SWITCHING STAGES TO COMPLETE A CONNECTION OVER SAID TWO-WIRE TRANSMISSION PATH FROM THE SAID CALLING LINE TO SAID CALLED LINE, HOLDING MEANS IN SAID SWITCHING STAGES FOR MAINTAINING SAID ESTABLISHED CONNECTION INDEPENDENTLY OF HOLDING CONTROL, AND RELEASE MEANS RESPONSIVE TO THE TERMINATION OF SAID CONNECTION FOR CONTROLLING SAID HOLDING MEANS OVER SAID TWO-WIRE TRANSMISSION PATH FOR RELEASING SAID SWITCHING STAGES.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |