US2564010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unattended repeater testing by causing the repeaters to oscillate
Assignee: AT&T Inc
•
Filing: 1947-07-07
•
Granted: 1951-08-14
•
Expires: 1967-07-07
Abstract
No abstract record available.
Inventors
- 👤 Oliver B Jacobs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:33
CPC Classifications
H; H04; H04B; H04B17/00; H04B17/40; H04B17/401; H04B17/402; H04B17/403
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2509365A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-13 | 1955-02-12 | 1955-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-13 | 1959-02-12 | 1959-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-13 | 1963-02-12 | 1963-08-14 | $7700.00 | Window Closed / Lapsed |