US2563591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave converter
Assignee: —
•
Filing: —
•
Granted: 1951-08-07
•
Expires: 1968-08-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:42
CPC Classifications
H; H03; H03D; H03D7/00; H03D7/14; H03D7/1408
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1304868A
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US1912794A
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US2030180A
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US2064585A
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US2149356A
Cited
US2274346A
Cited
US2332952A
Cited
US2438913A
Cited
US2432093A
Cited
US2437482A
Cited
US2436830A
Cited
US2433387A
Cited
US2408420A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-06 | 1955-02-05 | 1955-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-06 | 1959-02-05 | 1959-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-06 | 1963-02-05 | 1963-08-07 | $7700.00 | Window Closed / Lapsed |