Patent US2305842A successfully refreshed from Google Patents.
US3051901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Encoder for pulse code modulation
Assignee: AT&T Inc
•
Filing: 1958-06-24
•
Granted: 1962-08-28
•
Expires: 1978-06-24
Abstract
No abstract record available.
Inventors
- 👤 Robert E Yacger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:08
CPC Classifications
H; H03; H03M; H03M1/00; H03M1/66; H03M1/82; H03M1/822; H03M1/827
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2454780A
Cited
US2681384A
Cited
US2547035A
Cited
US2537843A
Cited
US2527650A
Cited
US2603715A
Cited
US2717370A
Cited
US2643368A
Cited
US2806139A
Cited
US2762038A
Cited
US2769861A
Cited
US2835807A
Cited
US2969535A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |