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US2625592A
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Asymmetrical conductive element
Assignee: Compagnie des Freins et Signaux Westinghouse SA
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Filing: 1949-10-29
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Granted: 1953-01-13
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Expires: 1969-10-29
Abstract
No abstract record available.
Inventors
- 👤 Sueur Rene
- 👤 Welker Heinrich
- 👤 Matare Herbert
- 👤 Bethge Bernhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:38
CPC Classifications
H; H03; H03D; H03D9/00; H03D9/06; H03D9/0608; H10; H10W; H10W90/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US962262A
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US1708573A
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GB279461A
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US1833332A
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DE555545C
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US2423091A
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US2572801A
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US2438892A
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US2472938A
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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) | 1956-01-13 | 1956-07-14 | 1957-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-13 | 1960-07-14 | 1961-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-13 | 1964-07-14 | 1965-01-13 | $7700.00 | Window Closed / Lapsed |