Patent US2468942A successfully refreshed from Google Patents.
US2468942A
Expired / Lapsed
US
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X-ray tube cooling apparatus
Assignee: Hartford National Bank and Trust Co
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Filing: 1946-07-01
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Granted: 1949-05-03
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Expires: 1966-07-01
Abstract
No abstract record available.
Inventors
- 👤 Oosterkamp Wijbe Johannes
- 👤 Vingerhoets Antonius Wilhelmus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:05
CPC Classifications
H; H01; H01J; H01J35/00; H01J35/02; H01J35/04; H01J35/08; H01J35/10; H01J35/105; H01J35/106
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1095121A
Cited
US1180998A
Cited
US1685928A
Cited
US1705033A
Cited
US1972114A
Cited
US2075146A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-02 | 1952-11-01 | 1953-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-02 | 1956-11-01 | 1957-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-02 | 1960-11-01 | 1961-05-03 | $7700.00 | Window Closed / Lapsed |