Patent US4346437A successfully refreshed from Google Patents.
Patent US3026375A successfully refreshed from Google Patents.
US3026375A
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Transmission of quantized signals
Assignee: AT&T Inc
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Filing: 1958-05-09
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Granted: 1962-03-20
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Expires: 1978-05-09
Abstract
No abstract record available.
Inventors
- 👤 Robert E Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:30
CPC Classifications
H; H04; H04N; H04N21/00; H04N21/40; H04N21/43; H04N21/434; H04B; H04B14/00; H04B14/02; H04B14/06; H04B14/066; H04B14/068; H04N19/00; H04N19/10; H04N19/102; H04N19/124; H04N19/50; H04N19/593; H04N21/20; H04N21/23; H04N21/236
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-19 | 1965-09-18 | 1966-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-19 | 1969-09-18 | 1970-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-19 | 1973-09-18 | 1974-03-20 | $7700.00 | Window Closed / Lapsed |