US2935685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency divider circuit
Assignee: AT&T Inc
•
Filing: 1955-12-27
•
Granted: 1960-05-03
•
Expires: 1975-12-27
Abstract
No abstract record available.
Inventors
- 👤 Herbert A Schneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:11
CPC Classifications
G; G06; G06F; G06F1/00; G06F1/04; H; H03; H03K; H03K23/00; H03K23/64; H03K23/66; H03K23/662
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2568319A
Cited
US2617873A
Cited
US2521789A
Cited
US2602140A
Cited
US2696556A
Cited
GB754908A
Cited
US2824228A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-03 | 1963-11-02 | 1964-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-03 | 1967-11-02 | 1968-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-03 | 1971-11-02 | 1972-05-03 | $7700.00 | Window Closed / Lapsed |