US2524420A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spinning-in the ends of tubes
Assignee: Individual
•
Filing: 1947-09-20
•
Granted: 1950-10-03
•
Expires: 1967-09-20
Abstract
No abstract record available.
Inventors
- 👤 Earle A Blampin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:35
CPC Classifications
B; B21; B21D; B21D41/00; B21D41/04; B21D41/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US4924A
Cited
US444721A
Cited
US491188A
Cited
US1297819A
Cited
US2325522A
Cited
US2286511A
Cited
US2434737A
Cited
US2449247A
Cited
US2443416A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-02 | 1954-04-03 | 1954-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-02 | 1958-04-03 | 1958-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-02 | 1962-04-03 | 1962-10-03 | $7700.00 | Window Closed / Lapsed |