Patent US2459891A successfully refreshed from Google Patents.
US2495402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making patterns for sheet stamping dies
Assignee: Solar Aircraft Co
•
Filing: 1945-09-17
•
Granted: 1950-01-24
•
Expires: 1965-09-17
Abstract
No abstract record available.
Inventors
- 👤 William J Bentsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:28
CPC Classifications
B; B21; B21D; B21D22/00; B21D22/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US189729A
Cited
US808177A
Cited
US1982318A
Cited
US2120987A
Cited
US2280864A
Cited
US2274060A
Cited
US2261181A
Cited
GB557288A
Cited
US2383706A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-23 | 1953-07-25 | 1954-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-23 | 1957-07-25 | 1958-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-23 | 1961-07-25 | 1962-01-24 | $7700.00 | Window Closed / Lapsed |