US2701344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wave guide phase shifter
Assignee: AT&T Inc
•
Filing: 1946-01-11
•
Granted: 1955-02-01
•
Expires: 1966-01-11
Abstract
No abstract record available.
Inventors
- 👤 Arnold E Bowen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:12
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/18; H01P1/182
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2425345A
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US2411534A
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US2607849A
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US2427098A
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US2477510A
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US2549721A
Cited
US2454530A
Cited
US2546840A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-31 | 1958-08-02 | 1959-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-31 | 1962-08-02 | 1963-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-31 | 1966-08-02 | 1967-02-01 | $7700.00 | Window Closed / Lapsed |