US2531028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron accelerating apparatus
Assignee: Individual
•
Filing: 1946-07-25
•
Granted: 1950-11-21
•
Expires: 1966-07-25
Abstract
No abstract record available.
Inventors
- 👤 Nicolas C Christofilos
- 👤 Nicolas C Philos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:49
CPC Classifications
H; H05; H05H; H05H13/00; H05H13/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2084476A
Cited
US2245670A
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US2193602A
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US2349011A
Cited
US2331788A
Cited
US2394070A
Cited
US2394073A
Cited
US2394072A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-20 | 1954-05-22 | 1954-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-20 | 1958-05-22 | 1958-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-20 | 1962-05-22 | 1962-11-21 | $7700.00 | Window Closed / Lapsed |