Patent US3387742A successfully refreshed from Google Patents.
Patent US3141949A successfully refreshed from Google Patents.
US3141949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High fatigue life braze-welded joint
Assignee: Boeing Co
•
Filing: 1962-11-09
•
Granted: 1964-07-21
•
Expires: 1982-11-09
Abstract
No abstract record available.
Inventors
- 👤 Donald T Lovell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:56
CPC Classifications
B; B23; B23K; B23K1/00; B23K1/0004
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
45 words
A METHOD OF FASTENING TWO METAL SHAPES TOGETHER COMPRISING OVERLAPPING THEIR EDGE PORTIONS, HOLDING BRAZING METAL HAVING A MELTING TEMPERATURE GREATER THAN 800* F. BETWEEN SUCH EDGE PORTIONS, PASSING WELDING CURRENT THROUGH ALL THE METALS TO ESTABLISH FUSION WELD AREAS INMEDIATELY SURROUNDED BY BRAZED AREAS.
References Cited (Backward Citations)
US1865051A
Cited
US1934673A
Cited
US2223312A
Cited
US2481614A
Cited
US2941064A
Cited
US3005086A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-21 | 1968-01-20 | 1968-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-21 | 1972-01-20 | 1972-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-21 | 1976-01-20 | 1976-07-21 | $7700.00 | Window Closed / Lapsed |