US2426988A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mold coating
Assignee: Alcoa Corp
•
Filing: 1942-11-13
•
Granted: 1947-09-09
•
Expires: 1962-11-13
Abstract
No abstract record available.
Inventors
- 👤 Walter A Dean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:32
CPC Classifications
B; B22; B22C; B22C3/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24298; Y10T428/24306
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1751482A
Cited
US1719276A
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US1909819A
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US1960711A
Cited
US2072212A
Cited
US2183424A
Cited
US2209035A
Cited
US2246463A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-09-08 | 1951-03-10 | 1951-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-09-08 | 1955-03-10 | 1955-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-09-08 | 1959-03-10 | 1959-09-09 | $7700.00 | Window Closed / Lapsed |