US3457630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluxless brazing of aluminum
Assignee: Lockheed Martin Corp
•
Filing: 1967-03-06
•
Granted: 1969-07-29
•
Expires: 1987-03-06
Abstract
No abstract record available.
Inventors
- 👤 Melvin M Schwartz
- 👤 Robert B O'keefe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:45
CPC Classifications
B; B23; B23K; B23K1/00; B23K1/008; B23K35/00; B23K35/22; B23K35/24; B23K35/28; B23K35/286
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) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |