US2955219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron discharge device
Assignee: Rauland Borg Corp
•
Filing: 1959-02-16
•
Granted: 1960-10-04
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Expires: 1979-02-16
Abstract
No abstract record available.
Inventors
- 👤 Wilfrid F Niklas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:22
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/38; H01J29/385; H01J31/00; H01J31/08; H01J31/50; H01J2231/00; H01J2231/50; H01J2231/50005; H01J2231/5001; H01J2231/50031; H01J2231/50036; H01J2231/50057; H01J2231/50063
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2060977A
Cited
US2153614A
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US2198479A
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US2247409A
Cited
US2926239A
Cited
US2641723A
Cited
US2807737A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-04 | 1964-04-04 | 1964-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-04 | 1968-04-04 | 1968-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-04 | 1972-04-04 | 1972-10-04 | $7700.00 | Window Closed / Lapsed |