US2939015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
X-ray tube
Assignee: US Philips Corp
•
Filing: 1957-04-12
•
Granted: 1960-05-31
•
Expires: 1977-04-12
Abstract
No abstract record available.
Inventors
- 👤 Reiniger Friedrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:34
CPC Classifications
H; H01; H01J; H01J35/00; H01J35/02; H01J35/04; H01J35/08; H01J35/10; H01J35/101; H05; H05G; H05G1/00; H05G1/02; H05G1/04; H01J2235/00; H01J2235/10; H01J2235/1026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1662891A
Cited
US1933005A
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US2118457A
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US2121630A
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US2222729A
Cited
US2216888A
Cited
US2307612A
Cited
US2601042A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |