US2909688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic means for deflecting electron beams
Assignee: Metropolitan Vickers Electrical Co Ltd
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Filing: 1958-02-17
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Granted: 1959-10-20
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Expires: 1978-02-17
Abstract
No abstract record available.
Inventors
- 👤 Archard Geoffrey Dennis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:17
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/70; H01J29/72; H01J29/76; H01J37/00; H01J37/02; H01J37/04; H01J37/147; H01J37/1472; H01J37/1474; H01J37/1475
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) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |