US2190494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making tubular sheet material
Assignee: Alcoa Corp
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Filing: 1937-10-04
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Granted: 1940-02-13
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Expires: 1957-10-04
Abstract
No abstract record available.
Inventors
- 👤 Richard L Templin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:16
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/02; B21D53/04; B21C; B21C23/00; B21C23/02; B21C23/04; B21C23/14; B21C23/142; Y; Y10; Y10S; Y10S29/00; Y10S29/047; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49364; Y10T428/00; Y10T428/12; Y10T428/12229; Y10T428/12292
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) | 1943-02-12 | 1943-08-14 | 1944-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-02-12 | 1947-08-14 | 1948-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-02-12 | 1951-08-14 | 1952-02-13 | $7700.00 | Window Closed / Lapsed |