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US2632944A
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Process for controlling warpage in iron castings during welding
Assignee: Engineering Dev Corp
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Filing: 1950-09-18
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Granted: 1953-03-31
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Expires: 1970-09-18
Abstract
No abstract record available.
Inventors
- 👤 Le Roy O Kittelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:05
CPC Classifications
B; B23; B23K; B23K31/00; B23K31/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49718; Y10T29/49746
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1777531A
Cited
US2229405A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-30 | 1956-09-29 | 1957-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-30 | 1960-09-29 | 1961-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-30 | 1964-09-29 | 1965-03-31 | $7700.00 | Window Closed / Lapsed |