Patent US3219850A successfully refreshed from Google Patents.
US3219850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromechanical transducers
Assignee: Clevite Corp
•
Filing: 1957-09-16
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Granted: 1965-11-23
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Expires: 1977-09-16
Abstract
No abstract record available.
Inventors
- 👤 Robert A Langevin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:12
CPC Classifications
G; G01; G01C; G01C19/00; G01C19/56; G01C19/5642; H; H04; H04R; H04R17/00; H04R17/04; H04R17/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
AN ELECTROMECHANICAL TRANSDUCER COMPRISING: A PLATE OF ELECTROMECHANICALLY ACTIVE MATERIAL RESPONSIVE IN THE FACE SHEAR MODE AND A PLATE OF ELECTROMECHANICALLY ACTIVE MATERIAL RESPONSIVE IN AN EXTENSIONAL MODE, SAID PLATES BEING SUPERPOSED AND MECHANICALLY COUPLED WITH A RESPECTIVE MAJOR SURFACE OF EACH IN CONFRONTING RELATION.
Claim 2
Dependent Claim
45 words
AN ELECTROMECHANICAL TRANSDUCER COMPRISING: A PLATE OF ELECTROMECHANICALLY ACTIVE MATERIAL RESPONSIVE IN THE FACE SHEAR MODE AND A PLATE OF ELECTROMECHANICALLY ACTIVE MATERIAL RESPONSIVE IN AN EXTENSIONAL MODE, SAID PLATES BEING SUPERPOSED AND MECHANICALLY COUPLED WITH A RESPECTIVE MAJOR SURFACE OF EACH IN CONFRONTING RELATION.
References Cited (Backward Citations)
US2444590A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |