US2679172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated die form and method of producing same
Assignee: Individual
•
Filing: 1951-03-16
•
Granted: 1954-05-25
•
Expires: 1971-03-16
Abstract
No abstract record available.
Inventors
- 👤 Walton S Clevenger
- 👤 Joel S Cohen
- 👤 Sanders G Cohen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:02
CPC Classifications
B; B23; B23P; B23P15/00; B23P15/24; B23P15/246; B21; B21D; B21D37/00; B21D37/20; B29; B29C; B29C33/00; B29C33/30; B29C33/301; B29C33/302; B29C33/38; B29C33/3842; B29C2033/385; B29C51/00; B29C51/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US576453A
Cited
US996601A
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US1449385A
Cited
US1582204A
Cited
US1701546A
Cited
US2100720A
Cited
US2348921A
Cited
US2547168A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-24 | 1957-11-23 | 1958-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-24 | 1961-11-23 | 1962-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-24 | 1965-11-23 | 1966-05-25 | $7700.00 | Window Closed / Lapsed |