US1889380A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device and method for recording sound waves
Assignee: Individual
•
Filing: 1931-07-14
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Granted: 1932-11-29
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Expires: 1951-07-14
Abstract
No abstract record available.
Inventors
- 👤 Ruben Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:52
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/84; G11B5/842; G11B5/845; Y; Y10; Y10S; Y10S29/00; Y10S29/028; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902
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) | 1935-11-29 | 1936-05-30 | 1936-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-11-29 | 1940-05-30 | 1940-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-11-29 | 1944-05-30 | 1944-11-29 | $7700.00 | Window Closed / Lapsed |