US2629079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wave-guide attenuator and modulator
Assignee: Individual
•
Filing: 1948-01-30
•
Granted: 1953-02-17
•
Expires: 1968-01-30
Abstract
No abstract record available.
Inventors
- 👤 Miller Theadore
- 👤 Richard H Webb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:04
CPC Classifications
H; H03; H03C; H03C7/00; H03C7/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2197122A
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US2197123A
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US2286428A
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US2427106A
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US2532157A
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US2444060A
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US2457601A
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US2447543A
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US2493706A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-17 | 1956-08-18 | 1957-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-17 | 1960-08-18 | 1961-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-17 | 1964-08-18 | 1965-02-17 | $7700.00 | Window Closed / Lapsed |