US2591520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic relay or contactor
Assignee: Individual
•
Filing: 1949-03-09
•
Granted: 1952-04-01
•
Expires: 1969-03-09
Abstract
No abstract record available.
Inventors
- 👤 Fligue Wladimir De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:47
CPC Classifications
H; H01; H01H; H01H51/00; H01H51/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB532429A
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DE307318C
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US791423A
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US2068682A
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US2131424A
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US2434433A
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US2439944A
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US2426062A
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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) | 1955-04-01 | 1955-10-01 | 1956-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-01 | 1959-10-01 | 1960-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-01 | 1963-10-01 | 1964-04-01 | $7700.00 | Window Closed / Lapsed |