US2632863A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reflex oscillator tube
Assignee: Varian Medical Systems Inc
•
Filing: 1950-02-25
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Granted: 1953-03-24
•
Expires: 1970-02-25
Abstract
No abstract record available.
Inventors
- 👤 Robert L Norton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:10
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/02; H01J25/22; H01J25/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2278210A
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US2425748A
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US2411912A
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US2421273A
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US2456861A
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US2468141A
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US2464801A
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US2518954A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-23 | 1956-09-22 | 1957-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-23 | 1960-09-22 | 1961-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-23 | 1964-09-22 | 1965-03-24 | $7700.00 | Window Closed / Lapsed |