Piezoelectric multielement device
Abstract
Abstract (1. A PIEZOELECTRIC DEVICE COMPRISING: AN INTEGRAL BLOCK-LIKE STRUCTURE COMPRISING A UNITARY MASS OF POLARIZED POLYCRYSTALLINE PIEZOELECTRIC MATERIAL COMPRISING STRUCTURALLY INTEGRAL FIRST AND SECOND PORTIONS EACH POLARIZED OPPOSITELY TO THE OTHER AND EACH OF SUCH PORTIONS CONTAINING A RESPECTIVE ONE OF FIRST AND SECOND SETS OF INCIVIDUALLY-INSULATED SUPERPOSED THIN ELECTRICALLY-CONDUCTIVE ELEMENTS MORE THAN TWO IN NUMBER AND SAID PORTIONS EACH CONTAINING A RESPECTIVE PORTION OF A THIRD SET OF INDIVIDUALLY-INSULATED THIN ELECTRICALLY-CONDUCTIVE ELEMENTS, THE SAID CONDUCTIVE ELEMENTS OF SAID THIRD SET THEREOF BEING DISTRIBUTED AMONG AND ALTERNATING WITH CONDUCTIVE ELEMENTS OF THE SAID FIRST AND SECOND SETS OF ELEMENTS; AND FIRST AND SECOND ELECTRIC TERMINAL MEANS THE FIRST OF WHICH IS CONNECTED TO SAID THIRD SET OF CONDUCTIVE ELEMENTS AND THE SECOND OF WHICH IS CONNECTED TO SAID FIRST AND SECOND SETS OF CONDUCTIVE ELEMENTS.)
Inventors
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Bibliographic Details
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |