US2646102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stock straightener for cold header devices
Assignee: National Machinery Co
•
Filing: 1949-03-15
•
Granted: 1953-07-21
•
Expires: 1969-03-15
Abstract
No abstract record available.
Inventors
- 👤 John H Friedman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:35
CPC Classifications
B; B21; B21K; B21K27/00; B21K27/02; B21F; B21F1/00; B21F1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE323981C
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-20 | 1957-01-19 | 1957-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-20 | 1961-01-19 | 1961-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-20 | 1965-01-19 | 1965-07-21 | $7700.00 | Window Closed / Lapsed |