US2956272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital to analog converter
Assignee: GTE Sylvania Inc
•
Filing: 1957-09-12
•
Granted: 1960-10-11
•
Expires: 1977-09-12
Abstract
No abstract record available.
Inventors
- 👤 Edmund U Cohler
- 👤 Joseph E Monahan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:41
CPC Classifications
H; H03; H03M; H03M1/00; H03M1/66
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2627039A
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US2594449A
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US2873367A
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US2838675A
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US2816237A
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US2831986A
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US2892103A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-11 | 1964-04-11 | 1964-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-11 | 1968-04-11 | 1968-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-11 | 1972-04-11 | 1972-10-11 | $7700.00 | Window Closed / Lapsed |