US2568440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite die for nut machines
Assignee: National Machinery Co
•
Filing: 1948-09-09
•
Granted: 1951-09-18
•
Expires: 1968-09-09
Abstract
No abstract record available.
Inventors
- 👤 John H Friedman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:08
CPC Classifications
B; B21; B21K; B21K1/00; B21K1/64
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US329801A
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US1395217A
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US1935821A
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US1896674A
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US2044986A
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US2146995A
Cited
US2147888A
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US2164750A
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US2350465A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-17 | 1955-03-19 | 1955-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-17 | 1959-03-19 | 1959-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-17 | 1963-03-19 | 1963-09-18 | $7700.00 | Window Closed / Lapsed |