US2492669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mercury vapor switch
Assignee: Individual
•
Filing: 1944-07-01
•
Granted: 1949-12-27
•
Expires: 1964-07-01
Abstract
No abstract record available.
Inventors
- 👤 Warren G Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:16
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/16; H01F7/1607
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2053930A
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US1941567A
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US2072993A
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US2221569A
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US2248574A
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US2294388A
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US2388430A
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US2292137A
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US2341562A
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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 |