US2808532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Space harmonic amplifiers
Assignee: Leland Stanford Junior University
•
Filing: 1951-10-26
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Granted: 1957-10-01
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Expires: 1971-10-26
Abstract
No abstract record available.
Inventors
- 👤 Lester M Field
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:38
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/34; H01J25/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2367295A
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US2653270A
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US2511407A
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US2566087A
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FR951115A
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US2687777A
Cited
US2643353A
Cited
US2683238A
Cited
US2645737A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |