US2537824A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetron
Assignee: AT&T Inc
•
Filing: 1946-03-30
•
Granted: 1951-01-09
•
Expires: 1966-03-30
Abstract
No abstract record available.
Inventors
- 👤 Homer D Hagstrum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:58
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2084867A
Cited
US2075855A
Cited
US2219117A
Cited
US2289952A
Cited
US2417789A
Cited
US2444435A
Cited
US2428612A
Cited
US2412824A
Cited
US2446826A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |