Patent US3029485A successfully refreshed from Google Patents.
US3029485A
Expired / Lapsed
US
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Method of making hollow castings
Assignee: Motors Liquidation Co
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Filing: 1959-01-14
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Granted: 1962-04-17
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Expires: 1979-01-14
Abstract
No abstract record available.
Inventors
- 👤 Hamilton L Mccormick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:18
CPC Classifications
B; B22; B22C; B22C9/00; B22C9/02; B22C9/04; F; F01; F01D; F01D5/00; F01D5/12; F01D5/14; F01D5/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2499977A
Cited
US2687278A
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US2679669A
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US2793412A
Cited
GB731292A
Cited
US2817490A
Cited
US2780435A
Cited
US2756475A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-16 | 1965-10-16 | 1966-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-16 | 1969-10-16 | 1970-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-16 | 1973-10-16 | 1974-04-17 | $7700.00 | Window Closed / Lapsed |