Patent US2160876A successfully refreshed from Google Patents.
US2160876A
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US
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Electromechanical transducer
Assignee: AT&T Inc
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Filing: 1936-09-16
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Granted: 1939-06-06
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Expires: 1956-09-16
Abstract
No abstract record available.
Inventors
- 👤 Lakatos Emory
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:47
CPC Classifications
E; E06; E06B; E06B7/00; E06B7/16; E06B7/18; H; H01; H01H; H01H51/00; H01H51/30; H01H51/32; H03; H03H; H03H9/00; H03H9/46; H03H9/48
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) | 1942-06-05 | 1942-12-05 | 1943-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-06-05 | 1946-12-05 | 1947-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-06-05 | 1950-12-05 | 1951-06-06 | $7700.00 | Window Closed / Lapsed |