Patent US2671871A successfully refreshed from Google Patents.
US2671871A
Expired / Lapsed
US
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Signal translating apparatus
Assignee: —
•
Filing: —
•
Granted: 1954-03-09
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Expires: 1971-03-09
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:11
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/44; H04N5/57; G; G09; G09G; G09G1/00; H04N3/00; H04N3/10; H04N3/16; H04N3/22; H04N3/23; H04N3/233
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2189916A
Cited
US2253312A
Cited
US2363810A
Cited
US2343988A
Cited
US2414228A
Cited
US2466711A
Cited
US2602909A
Cited
US2569240A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-08 | 1957-09-07 | 1958-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-08 | 1961-09-07 | 1962-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-08 | 1965-09-07 | 1966-03-09 | $7700.00 | Window Closed / Lapsed |