Patent US2923800A successfully refreshed from Google Patents.
US2923800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ring-shaped electric contact-devices
Assignee: COQ NV
•
Filing: 1958-03-31
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Granted: 1960-02-02
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Expires: 1978-03-31
Abstract
No abstract record available.
Inventors
- 👤 Borde Jean
- 👤 Picard Pierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:19
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/02; H01R13/15; H01H; H01H1/00; H01H1/12; H01H1/36; H01H1/42; H02; H02B; H02B11/00; H02B11/02; H02B11/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-01 | 1963-08-03 | 1964-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-01 | 1967-08-03 | 1968-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-01 | 1971-08-03 | 1972-02-02 | $7700.00 | Window Closed / Lapsed |