US3268248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inter-locking welded joint
Assignee: Douglas Aircraft Co Inc
•
Filing: 1963-11-08
•
Granted: 1966-08-23
•
Expires: 1983-11-08
Abstract
No abstract record available.
Inventors
- 👤 James W Chambers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:35
CPC Classifications
B; B23; B23K; B23K33/00; B23K33/004; B23K33/006
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) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |