Patent US2554580A successfully refreshed from Google Patents.
US2554580A
Expired / Lapsed
US
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Indicating system
Assignee: Societe dElectricite Mors SA
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Filing: 1947-03-13
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Granted: 1951-05-29
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Expires: 1967-03-13
Abstract
No abstract record available.
Inventors
- 👤 Goff Lucien Joseph Armand Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:59
CPC Classifications
B; B61; B61L; B61L25/00; B61L25/06; B61L25/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1351562A
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USRE21105E
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US1751584A
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US2035998A
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US1920826A
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FR816795A
Cited
US2159095A
Cited
US2247258A
Cited
US2374408A
Cited
US2468045A
Cited
US2431091A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-28 | 1954-11-27 | 1955-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-28 | 1958-11-27 | 1959-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-28 | 1962-11-27 | 1963-05-29 | $7700.00 | Window Closed / Lapsed |