US2413518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal forming machine
Assignee: Douglas Aircraft Co Inc
•
Filing: 1943-06-18
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Granted: 1946-12-31
•
Expires: 1963-06-18
Abstract
No abstract record available.
Inventors
- 👤 George D Rechton
- 👤 Jack H Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:11
CPC Classifications
B; B21; B21D; B21D22/00; B21D22/02; B21D22/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-12-30 | 1950-07-01 | 1950-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-12-30 | 1954-07-01 | 1954-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-12-30 | 1958-07-01 | 1958-12-31 | $7700.00 | Window Closed / Lapsed |