US2599753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wave guide phase shifter
Assignee: AT&T Inc
•
Filing: 1946-01-11
•
Granted: 1952-06-10
•
Expires: 1966-01-11
Abstract
No abstract record available.
Inventors
- 👤 Fox Arthur Gardner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:11
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/165; H01P1/17; H01P1/172; H01P1/18; H01P1/182
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2129669A
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US2197123A
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US2433368A
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US2407911A
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US2464269A
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US2438119A
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US2419613A
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US2477510A
Cited
US2401425A
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US2454530A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-10 | 1955-12-10 | 1956-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-10 | 1959-12-10 | 1960-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-10 | 1963-12-10 | 1964-06-10 | $7700.00 | Window Closed / Lapsed |