US3487309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuitry adapted to perform data processing,combination and alarm operations in reception in the operating-reserve system of isofrequency connections with middle and long-range radio relays
Assignee: Italtel SpA
•
Filing: 1966-03-14
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Granted: 1969-12-30
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Expires: 1986-03-14
Abstract
No abstract record available.
Inventors
- 👤 Luigi Sarati
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:42
CPC Classifications
H; H04; H04M; H04M11/00; G; G08; G08B; G08B25/00; G08B25/01; G08B25/10; G08C; G08C17/00; H04B; H04B1/00; H04B1/74
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2892930A
Cited
US3048840A
Cited
US3003031A
Cited
US2947861A
Cited
US3204204A
Cited
US3296532A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-29 | 1973-06-30 | 1973-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-29 | 1977-06-30 | 1977-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-29 | 1981-06-30 | 1981-12-30 | $7700.00 | Window Closed / Lapsed |