US3131320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Audio-frequency crystal vibrator
Assignee: K K KINSEKISHA KENKYUJO
•
Filing: 1960-09-01
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Granted: 1964-04-28
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Expires: 1980-09-01
Abstract
No abstract record available.
Inventors
- 👤 Shinada Toshio
- 👤 Oinuma Susumu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:02
CPC Classifications
G; G04; G04F; G04F5/00; G04F5/04; G04F5/06; G04F5/063; H; H03; H03B; H03B5/00; H03B5/30; H03B5/32; H03B5/34; H03H; H03H9/00; H03H9/15; H03H9/21; H03H9/215
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2081405A
Cited
US2666196A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |