US2849545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wide band traveling wave amplifier
Assignee: Individual
•
Filing: 1953-07-29
•
Granted: 1958-08-26
•
Expires: 1973-07-29
Abstract
No abstract record available.
Inventors
- 👤 John T Mendel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:38
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/34; H01J25/36; H01J25/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB313063A
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US2379897A
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US2455332A
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US2575383A
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US2657328A
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US2603772A
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US2660690A
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US2595698A
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US2619543A
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US2611832A
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US2779891A
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US2801358A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-25 | 1962-02-24 | 1962-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-25 | 1966-02-24 | 1966-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-25 | 1970-02-24 | 1970-08-26 | $7700.00 | Window Closed / Lapsed |