Patent US2730649A successfully refreshed from Google Patents.
US2730649A
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Traveling wave amplifier
Assignee: TDK Micronas GmbH
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Filing: 1950-02-04
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Granted: 1956-01-10
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Expires: 1970-02-04
Abstract
No abstract record available.
Inventors
- 👤 Gordon C Dewey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:55
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/16; H01J23/24; H01J23/30
Claims Analysis
Total Claims: 0
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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) | 1959-01-09 | 1959-07-11 | 1960-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-09 | 1963-07-11 | 1964-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-09 | 1967-07-11 | 1968-01-10 | $7700.00 | Window Closed / Lapsed |