US3038029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse transmission of alternate interchange code
Assignee: AT&T Inc
•
Filing: 1959-06-15
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Granted: 1962-06-05
•
Expires: 1979-06-15
Abstract
No abstract record available.
Inventors
- 👤 Robert L Carbrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:27
CPC Classifications
H; H04; H04N; H04N21/00; H04N21/20; H04N21/23; H04N21/238; H04N21/2383; H03; H03M; H03M1/00; H03M1/12; H03M1/22; H03M1/32; H03M5/00; H04L; H04L25/00; H04L25/38; H04L25/40; H04L25/49; H04N21/40; H04N21/43; H04N21/438; H04N21/4382; H04N7/00; H04N7/24; H04N7/52; H04N7/54; H04N7/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2700696A
Cited
US2912684A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-04 | 1965-12-04 | 1966-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-04 | 1969-12-04 | 1970-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-04 | 1973-12-04 | 1974-06-05 | $7700.00 | Window Closed / Lapsed |