US2943729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contractable ram mandrels
Assignee: Boeing Co
•
Filing: 1956-05-18
•
Granted: 1960-07-05
•
Expires: 1976-05-18
Abstract
No abstract record available.
Inventors
- 👤 George H Dalrymple
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:16
CPC Classifications
B; B21; B21C; B21C3/00; B21C3/16; Y; Y10; Y10T; Y10T279/00; Y10T279/10; Y10T82/00; Y10T82/26; Y10T82/266; Y10T82/268
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-05 | 1964-01-04 | 1964-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-05 | 1968-01-04 | 1968-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-05 | 1972-01-04 | 1972-07-05 | $7700.00 | Window Closed / Lapsed |