US2518325A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic synchronizing device and magnetic switch
Assignee: WILMINA L HURLEY
•
Filing: 1947-01-04
•
Granted: 1950-08-08
•
Expires: 1967-01-04
Abstract
No abstract record available.
Inventors
- 👤 Wilmina L Hurley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:41
CPC Classifications
B; B41; B41F; B41F13/00; B41F13/08; B41F13/10; B41F13/12; B41F13/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US531075A
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US1844950A
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US2052263A
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US2151570A
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US2105185A
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US2348862A
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GB544601A
Cited
US2306361A
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US2429500A
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US2396706A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-07 | 1954-02-06 | 1954-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-07 | 1958-02-06 | 1958-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-07 | 1962-02-06 | 1962-08-08 | $7700.00 | Window Closed / Lapsed |