US2813571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Channel die for flanging and folding corners
Assignee: Individual
•
Filing: 1954-02-25
•
Granted: 1957-11-19
•
Expires: 1974-02-25
Abstract
No abstract record available.
Inventors
- 👤 Cicero Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:46
CPC Classifications
B; B21; B21D; B21D37/00; B21D37/10; B21D19/00; B21D19/08; B21D51/00; B21D51/16; B21D51/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-18 | 1961-05-20 | 1961-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-18 | 1965-05-20 | 1965-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-18 | 1969-05-20 | 1969-11-19 | $7700.00 | Window Closed / Lapsed |