Patent US3496624A successfully refreshed from Google Patents.
US3496624A
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US
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Castings
Assignee: Alcoa Corp
•
Filing: 1966-10-25
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Granted: 1970-02-24
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Expires: 1986-10-25
Abstract
No abstract record available.
Inventors
- 👤 David L Kerr
- 👤 Robert C Lemon
- 👤 Edward E Stonebrook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:15
CPC Classifications
C; C22; C22F; C22F3/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49718; Y10T29/49748; Y10T29/4975; Y10T29/49972; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12736; Y10T428/1275; Y10T428/12757
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1891234A
Cited
US1946545A
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US1936652A
Cited
FR905619A
Cited
US2672430A
Cited
US2762734A
Cited
US2778756A
Cited
US2878140A
Cited
US3157540A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |