US1765709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making progressively reduced tubes
Assignee: American Fork and Hoe Co
•
Filing: 1928-09-28
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Granted: 1930-06-24
•
Expires: 1948-09-28
Abstract
No abstract record available.
Inventors
- 👤 Withington Winthrop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:46
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/16; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12201; Y10T428/12229
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) | 1933-06-23 | 1933-12-23 | 1934-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-06-23 | 1937-12-23 | 1938-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-06-23 | 1941-12-23 | 1942-06-24 | $7700.00 | Window Closed / Lapsed |