US3608187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum brazing-gas quenching nonferrous and ferrous alloys
Assignee: United States Department of the Army
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Filing: 1969-04-16
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Granted: 1971-09-28
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Expires: 1989-04-16
Abstract
Abstract THE DISCLOSURE RELATES TO THE APPARATUS AND METHOD FOR JOINING METAL PARTS TOGETHER THROUGH THE UTILIZATION OF A VACUUM BRAZING-GAS QUENCHING TECHNIQUE.
Inventors
- 👤 Paul K Shutt Jr
- 👤 Francis B Gurtner
- 👤 Frank T Kirk Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:15
CPC Classifications
B; B23; B23K; B23K1/00; B23K1/008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |