US2535137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave dynatron oscillator
Assignee: National Union Radio Corp
•
Filing: 1949-09-28
•
Granted: 1950-12-26
•
Expires: 1969-09-28
Abstract
No abstract record available.
Inventors
- 👤 Ernest R Jervis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:52
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/76; H03; H03B; H03B7/00; H03B7/02; H03B7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2170219A
Cited
US2163157A
Cited
US2295396A
Cited
US2416302A
Cited
US2409038A
Cited
US2412772A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-25 | 1954-06-26 | 1954-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-25 | 1958-06-26 | 1958-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-25 | 1962-06-26 | 1962-12-26 | $7700.00 | Window Closed / Lapsed |