US2492490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical safety switch
Assignee: EOLA LINDAE
•
Filing: 1946-08-22
•
Granted: 1949-12-27
•
Expires: 1966-08-22
Abstract
No abstract record available.
Inventors
- 👤 William H Lindae
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:34
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/10; H01H9/102
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US756541A
Cited
US1300546A
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US1364977A
Cited
GB188820A
Cited
US1534515A
Cited
US1604191A
Cited
GB266110A
Cited
US2007634A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-26 | 1953-06-27 | 1953-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-26 | 1957-06-27 | 1957-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-26 | 1961-06-27 | 1961-12-27 | $7700.00 | Window Closed / Lapsed |