Patent US2440236A successfully refreshed from Google Patents.
Patent US2579868A successfully refreshed from Google Patents.
Patent US2761406A successfully refreshed from Google Patents.
US2761406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Die for drawing sheet material
Assignee: Individual
•
Filing: 1954-05-25
•
Granted: 1956-09-04
•
Expires: 1974-05-25
Abstract
No abstract record available.
Inventors
- 👤 Michael S Schnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:03
CPC Classifications
B; B21; B21D; B21D22/00; B21D22/20; B21D22/24
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1959-09-04 | 1960-03-05 | 1960-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-04 | 1964-03-05 | 1964-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-04 | 1968-03-05 | 1968-09-04 | $7700.00 | Window Closed / Lapsed |