US3389272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gated transmission arrangement
Assignee: AT&T Inc
•
Filing: 1964-03-17
•
Granted: 1968-06-18
•
Expires: 1984-03-17
Abstract
No abstract record available.
Inventors
- 👤 Edward M Cherry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:17
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/74
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2788486A
Cited
US2803703A
Cited
US2990477A
Cited
US3098214A
Cited
US3231686A
Cited
US3179817A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-18 | 1971-12-18 | 1972-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-18 | 1975-12-18 | 1976-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-18 | 1979-12-18 | 1980-06-18 | $7700.00 | Window Closed / Lapsed |