Patent US3408514A successfully refreshed from Google Patents.
US3408514A
Expired / Lapsed
US
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Electromechanical transducer of the electrostrictive type
Assignee: Siemens AG
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Filing: 1967-09-18
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Granted: 1968-10-29
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Expires: 1987-09-18
Abstract
No abstract record available.
Inventors
- 👤 Adamietz Josef
- 👤 Thierbach Emma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:51
CPC Classifications
H; H04; H04R; H04R17/00; H03; H03H; H03H9/00; H03H9/15; H03H9/21
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3024429A
Cited
US3078427A
Cited
US3131320A
Cited
US3128397A
Cited
US3198970A
Cited
US3209176A
Cited
US3354413A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |