US3383510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alpha particle excited monochromatic X-ray source
Assignee: Parametrics Inc
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Filing: 1964-12-07
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Granted: 1968-05-14
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Expires: 1984-12-07
Abstract
No abstract record available.
Inventors
- 👤 Francis B Sellers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:03
CPC Classifications
G; G21; G21K; G21K1/00; G21K1/10; G21G; G21G4/00; G21G4/04; G21G4/06; H; H01; H01J; H01J35/00
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) | 1971-05-14 | 1971-11-13 | 1972-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-14 | 1975-11-13 | 1976-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-14 | 1979-11-13 | 1980-05-14 | $7700.00 | Window Closed / Lapsed |