US3409464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piezoelectric materials
Assignee: Clevite Corp
•
Filing: 1964-04-29
•
Granted: 1968-11-05
•
Expires: 1984-04-29
Abstract
No abstract record available.
Inventors
- 👤 Lebo R Shiozawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:02
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/15; H03H9/17; Y; Y10; Y10T; Y10T29/00; Y10T29/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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DE1082474B
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US2997408A
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US3065112A
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US3091707A
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US3093758A
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US3234488A
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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) | 1971-11-05 | 1972-05-06 | 1972-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-05 | 1976-05-06 | 1976-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-05 | 1980-05-06 | 1980-11-05 | $7700.00 | Window Closed / Lapsed |