US2993387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic control devices for mine hoisting machinery
Assignee: Societe des Forges et Ateliers du Creusot
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Filing: 1958-10-14
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Granted: 1961-07-25
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Expires: 1978-10-14
Abstract
No abstract record available.
Inventors
- 👤 Nectoux Andre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:53
CPC Classifications
B; B66; B66B; B66B1/00; B66B1/34; B66B1/46; B66B1/52; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19191; Y10T74/19205; Y10T74/19214
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2309668A
Cited
US2384044A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |