US2985834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amplitude sampling arrangement for pulse code modulation
Assignee: International Standard Electric Corp
•
Filing: 1955-06-06
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Granted: 1961-05-23
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Expires: 1975-06-06
Abstract
No abstract record available.
Inventors
- 👤 Treadwell Cyril Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:13
CPC Classifications
H; H04; H04B; H04B14/00; H04B14/02; H04B14/04; H04B14/046; H04B14/048
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2267120A
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US2443195A
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US2504354A
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US2716732A
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GB703247A
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US2810885A
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US2841719A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |