US3201522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Common control switching system for radio circuits
Assignee: AT&T Inc
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Filing: 1962-09-06
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Granted: 1965-08-17
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Expires: 1982-09-06
Abstract
No abstract record available.
Inventors
- 👤 Milton E Ozenberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:26
CPC Classifications
H; H04; H04W; H04W84/00; H04W84/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
IN A SWITCHING SYSTEM, A PLURALITY OF ATTENDANT POSITIONS, A MANUALLY OPERABLE KEEY AT EACH OF SAID POSITIONS, A PLURALITY OF COMBINATIONS OF RADIO LINES WHEREIN EACH COMBINATION OF RADIO LINE EXCLUSIVELY ACCESSIBLE TO A PRESELECTED ONE OF SAID POSITIONS, AND SWITCHING MEANS RESPONSIVE TO THE OPERATION OF SAID MANUALLY OPERABLE KEY AT EACH OF SAID POSITIONS FOR SEIZING THE SAID COMBINATION EXCLUSIVE THERETO.
Claim 2
Dependent Claim
64 words
IN A SWITCHING SYSTEM, A PLURALITY OF ATTENDANT POSITIONS, A MANUALLY OPERABLE KEEY AT EACH OF SAID POSITIONS, A PLURALITY OF COMBINATIONS OF RADIO LINES WHEREIN EACH COMBINATION OF RADIO LINE EXCLUSIVELY ACCESSIBLE TO A PRESELECTED ONE OF SAID POSITIONS, AND SWITCHING MEANS RESPONSIVE TO THE OPERATION OF SAID MANUALLY OPERABLE KEY AT EACH OF SAID POSITIONS FOR SEIZING THE SAID COMBINATION EXCLUSIVE THERETO.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |