US2901994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hood forming apparatus
Assignee: Alcoa Corp
•
Filing: 1953-11-27
•
Granted: 1959-09-01
•
Expires: 1973-11-27
Abstract
No abstract record available.
Inventors
- 👤 Edward M Wheeler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:59
CPC Classifications
B; B21; B21D; B21D51/00; B21D51/16; B21D51/38; B21D51/383
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1039661A
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US1039643A
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US2096346A
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US2016052A
Cited
US2166501A
Cited
US2544969A
Cited
US2614515A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |