US3482059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supervisory circuits for checking a repeater in a carrier current communication system
Assignee: International Standard Electric Corp
•
Filing: 1965-10-13
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Granted: 1969-12-02
•
Expires: 1985-10-13
Abstract
No abstract record available.
Inventors
- 👤 John Frederick Tilly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:56
CPC Classifications
H; H04; H04B; H04B17/00; H04B17/40; H04B17/401; H04B17/402; H04B17/405
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2570919A
Cited
US2686849A
Cited
US2823270A
Cited
US3189694A
Cited
US3049596A
Cited
US3059068A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-01 | 1973-06-02 | 1973-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-01 | 1977-06-02 | 1977-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-01 | 1981-06-02 | 1981-12-02 | $7700.00 | Window Closed / Lapsed |