Patent US2580355A successfully refreshed from Google Patents.
US2580355A
Expired / Lapsed
US
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Ion trap magnet
Assignee: Allen B du Mont Laboratories Inc
•
Filing: 1949-10-08
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Granted: 1951-12-25
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Expires: 1969-10-08
Abstract
No abstract record available.
Inventors
- 👤 Irving E Lempert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:09
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/84; H01J29/845
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |