US3058025A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic focussing devices
Assignee: MO Valve Co Ltd
•
Filing: 1958-12-17
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Granted: 1962-10-09
•
Expires: 1978-12-17
Abstract
No abstract record available.
Inventors
- 👤 Hogg Harold Alexander Cecil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:11
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/02; H01J23/08; H01J23/083
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2899597A
Cited
US2708236A
Cited
US2823332A
Cited
GB776072A
Cited
FR1129331A
Cited
US2857548A
Cited
US2890374A
Cited
US2951964A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-08 | 1966-04-09 | 1966-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-08 | 1970-04-09 | 1970-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-08 | 1974-04-09 | 1974-10-09 | $7700.00 | Window Closed / Lapsed |