US2843862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Header die with concavity in wall portion of aperture for holding upset blank therein
Assignee: AMERICAN SCREW CO
•
Filing: 1953-04-29
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Granted: 1958-07-22
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Expires: 1973-04-29
Abstract
No abstract record available.
Inventors
- 👤 Ian A Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:56
CPC Classifications
B; B21; B21K; B21K5/00; B21K5/20; B21J; B21J13/00; B21J13/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US230920A
Cited
US2030290A
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US2044986A
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US2227810A
Cited
US2202324A
Cited
US2328794A
Cited
US2618989A
Cited
US2638019A
Cited
US2671297A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-21 | 1962-01-20 | 1962-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-21 | 1966-01-20 | 1966-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-21 | 1970-01-20 | 1970-07-22 | $7700.00 | Window Closed / Lapsed |