US2492101A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric switch
Assignee: Wadsworth Electric Manufacturing Co
•
Filing: 1944-11-29
•
Granted: 1949-12-20
•
Expires: 1964-11-29
Abstract
No abstract record available.
Inventors
- 👤 Edwin W Landmeier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:53
CPC Classifications
H; H01; H01H; H01H23/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US501707A
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US968796A
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US1629158A
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US1894543A
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US1892854A
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US2209918A
Cited
US2312634A
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US2310096A
Cited
US2389220A
Cited
US2399449A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-19 | 1953-06-20 | 1953-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-19 | 1957-06-20 | 1957-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-19 | 1961-06-20 | 1961-12-20 | $7700.00 | Window Closed / Lapsed |