US2678015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for draw forming
Assignee: North American Aviation Corp
•
Filing: 1950-05-25
•
Granted: 1954-05-11
•
Expires: 1970-05-25
Abstract
No abstract record available.
Inventors
- 👤 Carl W Anderson
- 👤 Lyle R Boarts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:27
CPC Classifications
B; B21; B21D; B21D22/00; B21D22/10; Y; Y10; Y10S; Y10S220/00; Y10S220/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2339032A
Cited
US2354005A
Cited
US2348998A
Cited
US2400004A
Cited
US2410676A
Cited
GB569773A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-10 | 1957-11-09 | 1958-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-10 | 1961-11-09 | 1962-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-10 | 1965-11-09 | 1966-05-11 | $7700.00 | Window Closed / Lapsed |