US2798207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic microwave attenuators
Assignee: Individual
•
Filing: 1951-08-17
•
Granted: 1957-07-02
•
Expires: 1971-08-17
Abstract
No abstract record available.
Inventors
- 👤 Reggia Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:11
CPC Classifications
H; H03; H03G; H03G1/00; H03G1/0005; H03G1/0035; H03G1/0076; H03H; H03H7/00; H03H7/24; H03H7/25; H03H7/258
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2197123A
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US2286428A
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US2402948A
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US2392434A
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US2629079A
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DE806150C
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US2562744A
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US2645758A
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US2745069A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |