US2422305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of progressively welding axially moving tubing
Assignee: Republic Steel Corp
•
Filing: 1942-10-24
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Granted: 1947-06-17
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Expires: 1962-10-24
Abstract
No abstract record available.
Inventors
- 👤 Kopec Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:09
CPC Classifications
B; B23; B23K; B23K28/00; B23K28/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1604736A
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US1810112A
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US2092003A
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US2009476A
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US2091307A
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US2182796A
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US2196192A
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US2176237A
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US2179176A
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US2254792A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-16 | 1950-12-16 | 1951-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-16 | 1954-12-16 | 1955-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-16 | 1958-12-16 | 1959-06-17 | $7700.00 | Window Closed / Lapsed |