US3764401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metallic articles and the manufacture thereof
Assignee: Boeing North American Inc
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Filing: 1970-11-17
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Granted: 1973-10-09
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Expires: 1990-11-17
Abstract
Abstract THE MANUFACTURE OF ARTICLES FROM NON-AUSTENITIC METALLIC MATERIALS BY A TECHNIQUE IN WHICH THE ARTICLE IS FORMED TO ESSENTIALLY ITS FINAL CONFIGURATION; COOLED; AND, WHILE COOLED, WORKED TO PRODUCE RESIDUAL COMPRESSIVE STRESSES IN ONE OR MORE SURFACE PORTIONS OF THE ARTICLE.
Inventors
- 👤 L Hrusovsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:39
CPC Classifications
C; C22; C22F; C22F1/00; C22F1/04; C21; C21D; C21D7/00; C21D7/02; C21D7/04; C21D9/00; C21D9/02; H; H10; H10P; H10P95/00
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) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |