US2402937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for arc welding
Assignee: Lincoln Electric Co
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Filing: 1943-07-13
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Granted: 1946-06-25
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Expires: 1963-07-13
Abstract
No abstract record available.
Inventors
- 👤 Leonidas K Stringham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:57
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/18; B23K9/186
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-06-24 | 1949-12-24 | 1950-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-06-24 | 1953-12-24 | 1954-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-06-24 | 1957-12-24 | 1958-06-25 | $7700.00 | Window Closed / Lapsed |