US3361994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compact tuning fork resonator
Assignee: Kokusai Denki Electric Inc
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Filing: 1964-08-13
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Granted: 1968-01-02
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Expires: 1984-08-13
Abstract
No abstract record available.
Inventors
- 👤 Takahashi Kenji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:58
CPC Classifications
H; H03; H03B; H03B5/00; H03B5/30; G; G10; G10G; G10G7/00; G10G7/02; G10H; G10H3/00; G10H3/12; G10H3/14; G10H3/20; H03H; H03H9/00; H03H9/24; H03H9/46; H03H9/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-01 | 1971-07-03 | 1972-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-01 | 1975-07-03 | 1976-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-01 | 1979-07-03 | 1980-01-02 | $7700.00 | Window Closed / Lapsed |