US2938084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hybrid branching networks
Assignee: AT&T Inc
•
Filing: 1957-12-06
•
Granted: 1960-05-24
•
Expires: 1977-12-06
Abstract
No abstract record available.
Inventors
- 👤 Samuel W Autrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:01
CPC Classifications
H; H04; H04B; H04B3/00; H04B3/02; H04B3/36; H04B3/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2561212A
Cited
US2875283A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-24 | 1963-11-23 | 1964-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-24 | 1967-11-23 | 1968-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-24 | 1971-11-23 | 1972-05-24 | $7700.00 | Window Closed / Lapsed |