US2515528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Snap switch structure
Assignee: Penn Electric Switch Co
•
Filing: 1947-02-10
•
Granted: 1950-07-18
•
Expires: 1967-02-10
Abstract
No abstract record available.
Inventors
- 👤 John J Rothwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:32
CPC Classifications
H; H01; H01H; H01H5/00; H01H5/04; H01H5/18; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18856; Y10T74/18864
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2144120A
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US2228523A
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US2232243A
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US2318734A
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US2321834A
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US2338365A
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US2418068A
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US2487374A
Cited
US2414778A
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US2449086A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-17 | 1954-01-16 | 1954-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-17 | 1958-01-16 | 1958-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-17 | 1962-01-16 | 1962-07-18 | $7700.00 | Window Closed / Lapsed |