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US3011136A
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Electro-acoustic delay-line
Assignee: Ferranti International PLC
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Filing: 1959-08-17
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Granted: 1961-11-28
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Expires: 1979-08-17
Abstract
No abstract record available.
Inventors
- 👤 Scarrott Gordon George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:06
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/30; H03H9/36; H03H9/02; H03H9/125; H03H9/13; H03H9/133; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49016
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2430013A
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US2495740A
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GB714627A
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US2800633A
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US2799832A
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US2810888A
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US2828470A
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US2906971A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-11-27 | 1965-05-29 | 1965-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-27 | 1969-05-29 | 1969-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-27 | 1973-05-29 | 1973-11-28 | $7700.00 | Window Closed / Lapsed |