US2433296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas carrying mandrel for pipe welding
Assignee: Republic Steel Corp
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Filing: 1944-11-27
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Granted: 1947-12-23
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Expires: 1964-11-27
Abstract
No abstract record available.
Inventors
- 👤 Walter S Schaefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:37
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/32; B23K9/325; B23K9/326
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-22 | 1951-06-23 | 1951-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-22 | 1955-06-23 | 1955-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-22 | 1959-06-23 | 1959-12-23 | $7700.00 | Window Closed / Lapsed |