US2621269A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic relay with compensated contact pressure
Assignee: International Standard Electric Corp
•
Filing: 1948-12-30
•
Granted: 1952-12-09
•
Expires: 1968-12-30
Abstract
No abstract record available.
Inventors
- 👤 Yves J G Juillard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:44
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/64; H01H50/68; H01H50/16; H01H50/18; H01H50/32; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20582; Y10T74/20588
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US286917A
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US1380168A
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FR537787A
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GB309096A
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US1869610A
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US1991113A
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US2075499A
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US2348088A
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US2351038A
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US2323961A
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US2377596A
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US2418235A
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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) | 1955-12-09 | 1956-06-09 | 1956-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-09 | 1960-06-09 | 1960-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-09 | 1964-06-09 | 1964-12-09 | $7700.00 | Window Closed / Lapsed |