US2505534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for controlling the propagation of energy in a wave guide
Assignee: General Electric Co
•
Filing: 1943-04-27
•
Granted: 1950-04-25
•
Expires: 1963-04-27
Abstract
No abstract record available.
Inventors
- 👤 Milan D Fiske
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:05
CPC Classifications
H; H03; H03G; H03G3/00; H03G3/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1035958A
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US2308523A
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US2284405A
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US2408425A
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US2432093A
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US2407068A
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US2413963A
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US2413171A
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US2403302A
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US2403303A
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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) | 1953-04-24 | 1953-10-24 | 1954-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-24 | 1957-10-24 | 1958-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-24 | 1961-10-24 | 1962-04-25 | $7700.00 | Window Closed / Lapsed |