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US3435368A
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US
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Low frequency piezoelectric crystal oscillator having a single driving circuit
Assignee: Hattori Tokeiten KK
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Filing: 1965-10-22
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Granted: 1969-03-25
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Expires: 1985-10-22
Abstract
No abstract record available.
Inventors
- 👤 Hitohiro Fukuyo
- 👤 Norio Tabuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:53
CPC Classifications
H; H03; H03B; H03B5/00; H03B5/30; H03B5/32; H03B5/36; H03B5/362
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1559116A
Cited
US1866267A
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US1788219A
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US2448188A
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US3108223A
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US3233192A
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US3251007A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |