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Patent US2137157A successfully refreshed from Google Patents.
US2137157A
Expired / Lapsed
US
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Apparatus for reproducing sound
Assignee: FUNDADORA FOTOLIPTOFO Cia
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Filing: 1935-08-30
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Granted: 1938-11-15
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Expires: 1955-08-30
Abstract
No abstract record available.
Inventors
- 👤 Crudo Fernando
- 👤 Svanholm Kaj Andersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:06
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/002; G11B7/0037
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1941-11-14 | 1942-05-16 | 1942-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-11-14 | 1946-05-16 | 1946-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-11-14 | 1950-05-16 | 1950-11-15 | $7700.00 | Window Closed / Lapsed |