Patent US3934392A successfully refreshed from Google Patents.
Patent US3344241A successfully refreshed from Google Patents.
US3344241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Harmon etal trouble indicating system
Assignee: —
•
Filing: —
•
Granted: 1967-09-26
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Expires: 1984-09-26
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:40
CPC Classifications
H; H04; H04M; H04M3/00; H04M3/08; H04M3/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
IN AN AUTOMATIC SWITCHING SYSTEM, A PLURALITY OF OPERATING CIRCUITS, MEANS FOR SUCCESSIVELY REMOVING CERTAIN OF SAID OPERATING CIRCUITS FROM SERVICE IN RESPONSE TO A PLURALITY OF TROUBLE INDICATIONS FROM EACH OF SAID CERTAIN CIRCUITS, AND MEANS FOR INHIBITING REMOVAL FROM SERVICE OF ADDITIONAL OPERATING CIRCUITS UPON THE REMOVAL OF A PREDETERMINED NUMBER OF SAID CERTAIN CIRCUITS.
Claim 2
Dependent Claim
57 words
IN AN AUTOMATIC SWITCHING SYSTEM, A PLURALITY OF OPERATING CIRCUITS, MEANS FOR SUCCESSIVELY REMOVING CERTAIN OF SAID OPERATING CIRCUITS FROM SERVICE IN RESPONSE TO A PLURALITY OF TROUBLE INDICATIONS FROM EACH OF SAID CERTAIN CIRCUITS, AND MEANS FOR INHIBITING REMOVAL FROM SERVICE OF ADDITIONAL OPERATING CIRCUITS UPON THE REMOVAL OF A PREDETERMINED NUMBER OF SAID CERTAIN CIRCUITS.
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) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |