US2769937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tunable stabilized magnetron
Assignee: Individual
•
Filing: 1946-05-10
•
Granted: 1956-11-06
•
Expires: 1966-05-10
Abstract
No abstract record available.
Inventors
- 👤 Hutchinson Franklin
- 👤 Melvin A Herlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:28
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/50; H01J25/52; H01J25/58; H01J25/587; H01J23/00; H01J23/16; H01J23/18; H01J23/20; H01J23/207
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2421912A
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US2445282A
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US2421636A
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US2414085A
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US2413385A
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US2523286A
Cited
US2659028A
Cited
US2501545A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-06 | 1960-05-07 | 1960-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-06 | 1964-05-07 | 1964-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-06 | 1968-05-07 | 1968-11-06 | $7700.00 | Window Closed / Lapsed |