US2503266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency stabilization apparatus
Assignee: Unisys Corp
•
Filing: 1943-08-11
•
Granted: 1950-04-11
•
Expires: 1963-08-11
Abstract
No abstract record available.
Inventors
- 👤 Arthur E Harrison
- 👤 Arthur K Roemer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:12
CPC Classifications
H; H03; H03L; H03L1/00; H03L1/02; H03L1/021; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2142
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1913978A
Cited
GB422869A
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US2134794A
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US2095981A
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US2109880A
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US2183215A
Cited
US2142630A
Cited
US2251085A
Cited
US2374810A
Cited
US2414785A
Cited
US2418844A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-10 | 1953-10-10 | 1954-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-10 | 1957-10-10 | 1958-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-10 | 1961-10-10 | 1962-04-11 | $7700.00 | Window Closed / Lapsed |