US2957053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Audio-electric translating device
Assignee: GEN PHONES CORP
•
Filing: 1956-02-21
•
Granted: 1960-10-18
•
Expires: 1976-02-21
Abstract
No abstract record available.
Inventors
- 👤 George D Chichester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:12
CPC Classifications
H; H04; H04R; H04R11/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US201488A
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US1569411A
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US1478709A
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US1795948A
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GB368763A
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US2069242A
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GB490010A
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US2340122A
Cited
US2610259A
Cited
FR993438A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-18 | 1964-04-18 | 1964-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-18 | 1968-04-18 | 1968-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-18 | 1972-04-18 | 1972-10-18 | $7700.00 | Window Closed / Lapsed |