US2232831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
X-ray tube
Assignee: Hartford National Bank and Trust Co
•
Filing: 1938-08-01
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Granted: 1941-02-25
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Expires: 1958-08-01
Abstract
No abstract record available.
Inventors
- 👤 Tuuk Jacob Harmannus Van Der
- 👤 Bouwers Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:29
CPC Classifications
H; H01; H01J; H01J35/00; H01J35/02; H01J35/20; H01J35/04; H01J35/08; H01J35/10; H01J35/101; H01J35/1017; H01J35/1024; H01J2235/00; H01J2235/16; H01J2235/165; H01J2235/168
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-02-25 | 1944-08-26 | 1945-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-02-25 | 1948-08-26 | 1949-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-02-25 | 1952-08-26 | 1953-02-25 | $7700.00 | Window Closed / Lapsed |