US2950450A
Expired / Lapsed
US
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Attenuators or suppressors for attenuating or suppressing undesired oscillations
Assignee: EMI Ltd
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Filing: 1957-03-01
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Granted: 1960-08-23
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Expires: 1977-03-01
Abstract
No abstract record available.
Inventors
- 👤 King Leonard Tony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:27
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/36; H01J23/40; H01J23/46; H01J23/16; H01J23/24; H01J23/30; H01J25/00; H01J25/02; H01J25/22; H01J25/24; H01P; H01P1/00; H01P1/16; H01P1/162; H01P7/00; H01P7/04; H03; H03B; H03B5/00; H03B5/18; H03B5/1817; H03B5/1835
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) | 1963-08-23 | 1964-02-22 | 1964-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-23 | 1968-02-22 | 1968-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-23 | 1972-02-22 | 1972-08-23 | $7700.00 | Window Closed / Lapsed |