US2994791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode of a quartz oscillator
Assignee: Individual
•
Filing: 1958-05-26
•
Granted: 1961-08-01
•
Expires: 1978-05-26
Abstract
No abstract record available.
Inventors
- 👤 Shinada Toshio
- 👤 Yamaguchi Michitaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:34
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/02; H03H9/02007; H03H9/02062; H03H9/0207; H03H9/05; H03H9/0504; H03H9/0533; H03H9/125; H03H9/13; H03H9/132; H03H9/15; H03H9/17; H03H9/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1930536A
Cited
US2385896A
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US2248057A
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US2648785A
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US2635199A
Cited
US2595037A
Cited
US2656473A
Cited
US2771561A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-31 | 1965-01-30 | 1965-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-31 | 1969-01-30 | 1969-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-31 | 1973-01-30 | 1973-08-01 | $7700.00 | Window Closed / Lapsed |