US2979662A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical wave synchronizing circuit
Assignee: AT&T Inc
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Filing: 1958-11-28
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Granted: 1961-04-11
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Expires: 1978-11-28
Abstract
No abstract record available.
Inventors
- 👤 Cecil W Farrow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:05
CPC Classifications
H; H03; H03D; H03D7/00; H04; H04L; H04L7/00; H04L7/02; H04L7/027; H03C; H03C1/00; H03C1/52; H03C1/54; H03C1/56; H03C1/58; H03D1/00; H03D1/08; H03D1/10; H03D1/22; H03D2200/00; H03D2200/0041; H03D2200/0082; H03D7/16; H03D7/161; H03D7/163; H03D7/165
Claims Analysis
Total Claims: 0
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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) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |