US1963057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming tubular structural elements
Assignee: American Fork and Hoe Co
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Filing: 1933-01-17
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Granted: 1934-06-12
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Expires: 1953-01-17
Abstract
No abstract record available.
Inventors
- 👤 Hallie M Wilcox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:23
CPC Classifications
B; B21; B21D; B21D15/00; B21D15/02; E; E04; E04C; E04C3/00; E04C3/02; E04C3/04; E04C2003/0404; E04C2003/0408; E04C2003/0421; E04C2003/0426; E04C2003/043; E04C2003/0443; E04C2003/0447; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49616; Y10T29/49623; Y10T29/49631; Y10T29/4981
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) | 1937-06-11 | 1937-12-11 | 1938-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-06-11 | 1941-12-11 | 1942-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-06-11 | 1945-12-11 | 1946-06-12 | $7700.00 | Window Closed / Lapsed |