US2624005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized crystal oscillator circuits
Assignee: Hartford National Bank and Trust Co
•
Filing: 1948-02-20
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Granted: 1952-12-30
•
Expires: 1968-02-20
Abstract
No abstract record available.
Inventors
- 👤 Hansen Hendrik Nicolaas
- 👤 Greefkes Johannes Anton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:11
CPC Classifications
H; H03; H03B; H03B5/00; H03B5/30; H03B5/32; H03B5/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2071564A
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US2054431A
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US2155649A
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US2248481A
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US2302123A
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US2306555A
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US2442612A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-30 | 1956-06-30 | 1956-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-30 | 1960-06-30 | 1960-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-30 | 1964-06-30 | 1964-12-30 | $7700.00 | Window Closed / Lapsed |