US2090636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
X-ray tube
Assignee: Individual
•
Filing: 1930-12-06
•
Granted: 1937-08-24
•
Expires: 1950-12-06
Abstract
No abstract record available.
Inventors
- 👤 Dimitry E Olshevsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:09
CPC Classifications
H; H01; H01J; H01J35/00; H01J35/02; H05; H05G; H05G1/00; H05G1/02; H05G1/04; H01J35/16; H01J35/18; H01J35/186
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) | 1940-08-23 | 1941-02-22 | 1941-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-08-23 | 1945-02-22 | 1945-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-08-23 | 1949-02-22 | 1949-08-24 | $7700.00 | Window Closed / Lapsed |