US2900557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traveling wave directional attenuator
Assignee: General Electric Co
•
Filing: 1954-08-26
•
Granted: 1959-08-18
•
Expires: 1974-08-26
Abstract
No abstract record available.
Inventors
- 👤 Stanley E Webber
- 👤 Joseph A Rich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:32
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/16; H01J23/24; H01J23/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2452529A
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US2580678A
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US2626371A
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US2584597A
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US2644930A
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US2588832A
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US2798203A
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US2797360A
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US2752430A
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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) | 1962-08-17 | 1963-02-16 | 1963-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-17 | 1967-02-16 | 1967-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-17 | 1971-02-16 | 1971-08-18 | $7700.00 | Window Closed / Lapsed |