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US2808268A
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Sound translating apparatus
Assignee: Gray Manufacturing Co Inc
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Filing: 1951-02-02
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Granted: 1957-10-01
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Expires: 1971-02-02
Abstract
No abstract record available.
Inventors
- 👤 Frank L Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:42
CPC Classifications
G; G11; G11B; G11B3/00; G11B19/00; G11B19/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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FR525790A
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US1533561A
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US2452133A
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US2357033A
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US2391784A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |