US2429320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of stress-relief of welded structures
Assignee: Linde Air Products Co
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Filing: 1944-02-22
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Granted: 1947-10-21
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Expires: 1964-02-22
Abstract
No abstract record available.
Inventors
- 👤 Harry E Kennedy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:49
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/50; C21D9/505; C21D2281/00; C21D2281/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2315558A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-10-20 | 1951-04-21 | 1951-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-20 | 1955-04-21 | 1955-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-20 | 1959-04-21 | 1959-10-21 | $7700.00 | Window Closed / Lapsed |