Patent US2421149A successfully refreshed from Google Patents.
US2421149A
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US
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Pressure actuated switch
Assignee: Sandvik AB
•
Filing: 1945-01-13
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Granted: 1947-05-27
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Expires: 1965-01-13
Abstract
No abstract record available.
Inventors
- 👤 Segerstad Carl Gustaf Hard Af
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:37
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/24; H01H35/34; H01H35/346
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1444403A
Cited
US2116960A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-05-26 | 1950-11-25 | 1951-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-05-26 | 1954-11-25 | 1955-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-05-26 | 1958-11-25 | 1959-05-27 | $7700.00 | Window Closed / Lapsed |