US2748304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric discharge tube for intensifying fluorescent images produced with the use ofchi-rays
Assignee: Hartford National Bank and Trust Co
•
Filing: 1951-03-01
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Granted: 1956-05-29
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Expires: 1971-03-01
Abstract
No abstract record available.
Inventors
- 👤 Botden Theodoor Peter Johannes
- 👤 Teves Marten Cornelis
- 👤 Tol Taeke
- 👤 Boer Floris De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:34
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/38; H01J29/385; H01J29/18; H01J29/24; H01J31/00; H01J31/08; H01J31/50; H01J31/503
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1401006A
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US2188115A
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US2151785A
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US2344042A
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US2555423A
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US2523132A
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US2667585A
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US2663801A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |