US2691804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for bottom casting
Assignee: Societe dInventions Aeronautiques et Mechaniques SIAM SA
•
Filing: 1952-02-28
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Granted: 1954-10-19
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Expires: 1972-02-28
Abstract
No abstract record available.
Inventors
- 👤 Lucien Rene
- 👤 Tetart Emile
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:34
CPC Classifications
B; B22; B22C; B22C9/00; B22C9/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US574616A
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US1315944A
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US649044A
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US1739222A
Cited
US2195960A
Cited
US2186260A
Cited
US2063815A
Cited
US2231813A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-18 | 1958-04-19 | 1958-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-18 | 1962-04-19 | 1962-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-18 | 1966-04-19 | 1966-10-19 | $7700.00 | Window Closed / Lapsed |