US2524175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Keying of high-frequency oscillators
Assignee: Minister of Supply In Her Majesty S Government
•
Filing: 1945-06-28
•
Granted: 1950-10-03
•
Expires: 1965-06-28
Abstract
No abstract record available.
Inventors
- 👤 Donald H Preist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:17
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/78
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1695042A
Cited
US2037799A
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US2153202A
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US2103090A
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US2252293A
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US2410087A
Cited
US2416367A
Cited
US2418121A
Cited
US2392380A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-02 | 1954-04-03 | 1954-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-02 | 1958-04-03 | 1958-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-02 | 1962-04-03 | 1962-10-03 | $7700.00 | Window Closed / Lapsed |