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US3588980A
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US
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Method for making a contoured article
Assignee: General Electric Co
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Filing: 1969-07-17
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Granted: 1971-06-29
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Expires: 1989-07-17
Abstract
Abstract A HOLLOW CONTOURED ARTICLE, SUCH AS A TURBOMACHINERY BLADE OR VANE, HAVING A HOLLOW INTERNAL PORTION CAN BE MADE FROM MILL STOCK BY SEPARATELY FORMING A PLURALITY OF MEMBERS FROM MILL STOCK SHAPE AND THEN FORMING AN UNBONDED ASSEMBLY OF SUCH MEMBERS. THE MEMBERS ARE THEN SEPARATED FOR REMOVAL OF SELECTED INTERNAL MATERIAL PRIOR TO BONDING THE ASSEMBLY OF MEMBERS.
Inventors
- 👤 Richard M Cogan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:56
CPC Classifications
B; B23; B23P; B23P15/00; B23P15/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/49336; Y10T29/49339
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) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |