US2845554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Devices for ensuring an electric contact between rotary parts of an electric machine
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1956-03-16
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Granted: 1958-07-29
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Expires: 1976-03-16
Abstract
No abstract record available.
Inventors
- 👤 Schwab Bernard
- 👤 Vautrey Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:36
CPC Classifications
H; H02; H02K; H02K31/00; H02K31/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1443644A
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US1507825A
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FR650742A
Cited
US2401166A
Cited
US2501344A
Cited
US2588466A
Cited
US2753476A
Cited
US2786155A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-28 | 1962-01-27 | 1962-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-28 | 1966-01-27 | 1966-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-28 | 1970-01-27 | 1970-07-29 | $7700.00 | Window Closed / Lapsed |