US1410461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Making castings of aluminum-silicon alloys
Assignee: Alcoa Corp
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Filing: 1920-11-27
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Granted: 1922-03-21
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Expires: 1940-11-27
Abstract
No abstract record available.
Inventors
- 👤 Junius D Edwards
- 👤 Harry V Churchill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:34
CPC Classifications
C; C22; C22C; C22C21/00; C22C21/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1925-03-20 | 1925-09-19 | 1926-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-03-20 | 1929-09-19 | 1930-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-03-20 | 1933-09-19 | 1934-03-21 | $7700.00 | Window Closed / Lapsed |