US2490416A
Expired / Lapsed
US
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Apparatus for forming closed-end tubes
Assignee: Individual
•
Filing: 1947-06-02
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Granted: 1949-12-06
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Expires: 1967-06-02
Abstract
No abstract record available.
Inventors
- 👤 Fred V Collins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:40
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/14; B29C65/1487; B29C65/022; B29C65/04; B29C65/1403; B29C65/1425; B29C65/78; B29C65/7858; B29C65/7879; B29C65/7882; B29C65/7885; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/12; B29C66/122; B29C66/1222; B29C66/1224; B29C66/50; B29C66/51; B29C66/53; B29C66/534; B29C66/5346; B29C66/53461; B29C66/61; B29C66/612; B29C66/70; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; B29C66/80; B29C66/83; B29C66/832; B29C66/8322; B29C65/7841; B29C65/7847; B29C66/71; Y; Y10; Y10S; Y10S264/00; Y10S264/46; Y10S264/76; Y10T; Y10T156/00; Y10T156/17; Y10T156/1702; Y10T156/1705; Y10T156/1707; Y10T156/171; Y10T156/1744; Y10T156/1768
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) | 1952-12-05 | 1953-06-06 | 1953-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-05 | 1957-06-06 | 1957-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-05 | 1961-06-06 | 1961-12-06 | $7700.00 | Window Closed / Lapsed |