US3379897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency division by sequential countdown of paralleled chain counters
Assignee: AT&T Inc
•
Filing: 1965-04-22
•
Granted: 1968-04-23
•
Expires: 1985-04-22
Abstract
No abstract record available.
Inventors
- 👤 Kaminski William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:02
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/26; H03K3/30; G; G06; G06F; G06F7/00; G06F7/60; G06F7/68; H03K23/00; H03K23/64; H03K23/66; H03K23/667
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2602140A
Cited
US3158751A
Cited
US3096483A
Cited
US3108198A
Cited
US3200261A
Cited
US3283131A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-23 | 1971-10-23 | 1972-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-23 | 1975-10-23 | 1976-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-23 | 1979-10-23 | 1980-04-23 | $7700.00 | Window Closed / Lapsed |