Patent US2434646A successfully refreshed from Google Patents.
US2434646A
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US
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Wave guide branching arrangement
Assignee: AT&T Inc
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Filing: 1945-09-07
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Granted: 1948-01-20
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Expires: 1965-09-07
Abstract
No abstract record available.
Inventors
- 👤 Fox Arthur Gardner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:50
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/20; H01P1/213; H01P1/2138; H01P1/207; H01P1/209; H01P5/00; H01P5/02; H01P5/022; H01P5/024; H01P5/08; H01Q; H01Q13/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-01-19 | 1951-07-21 | 1952-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-01-19 | 1955-07-21 | 1956-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-01-19 | 1959-07-21 | 1960-01-20 | $7700.00 | Window Closed / Lapsed |