US2550641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for welding
Assignee: Babcock and Wilcox Co
•
Filing: 1947-08-25
•
Granted: 1951-04-24
•
Expires: 1967-08-25
Abstract
No abstract record available.
Inventors
- 👤 Harter Isaac
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:12
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/18; B23K9/186; B23K9/188
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2175606A
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US1298590A
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US1544044A
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US1795332A
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US2043960A
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US2184534A
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US2344534A
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US2191482A
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US2437782A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-23 | 1954-10-23 | 1955-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-23 | 1958-10-23 | 1959-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-23 | 1962-10-23 | 1963-04-24 | $7700.00 | Window Closed / Lapsed |