US3821747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording system having piezoelectric stylus drive means
Assignee: United States Atomic Energy Commission
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Filing: 1973-04-23
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Granted: 1974-06-28
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Expires: 1993-04-23
Abstract
Abstract A RECORDING SYSTEM IS DESCRIBED WHICH UTILIZES ONE OR MORE ELONGATED MULTILAYER PIEZOELECTRIC ELEMENTS SUPPORTED ADJACENT ONE END WITH OTHER END FREE FOR SIDEWAYS BENDING MOVEMENTS, AND CARRYING A STYLUS AT THE FREE END, WITH A RECORDER MEDIUM IN CONTACT WITH THE STYLUS AND RELATIVELY MOVABLE ONE WITH RESPECT TO THE OTHER, AND MEANS FOR SELECTIVELY VIBRATING THE MULTILAYER ELEMENT BY OSCILLATING ELECTRICAL SIGNALS WHICH ARE PROPORTIONAL TO THE INFORMATION WHICH IS TO BE RECORDED.
Inventors
- 👤 H Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:41
CPC Classifications
H; H10; H10N; H10N30/00; H10N30/80; H10N30/802
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) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-27 | 1981-12-27 | 1982-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-27 | 1985-12-27 | 1986-06-28 | $7700.00 | Window Closed / Lapsed |