Patent US5738996A successfully refreshed from Google Patents.
Patent US2451454A successfully refreshed from Google Patents.
US2451454A
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Method of fabricating airfoils
Assignee: ThyssenKrupp Budd Co
•
Filing: 1943-06-28
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Granted: 1948-10-12
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Expires: 1963-06-28
Abstract
No abstract record available.
Inventors
- 👤 Watter Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:56
CPC Classifications
B; B21; B21D; B21D49/00; B21D22/00; B21D22/02; B64; B64C; B64C3/00; B64C3/26; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/49336; Y10T29/49826; Y10T29/49892; Y10T29/49904
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) | 1951-10-12 | 1952-04-12 | 1952-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-12 | 1956-04-12 | 1956-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-12 | 1960-04-12 | 1960-10-12 | $7700.00 | Window Closed / Lapsed |