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Patent US2441507A successfully refreshed from Google Patents.
US2441507A
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US
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Apparatus for arc welding
Assignee: Lincoln Electric Co
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Filing: 1944-12-11
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Granted: 1948-05-11
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Expires: 1964-12-11
Abstract
No abstract record available.
Inventors
- 👤 Peters Vladimir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:33
CPC Classifications
B; B23; B23K; B23K37/00; B23K37/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1508713A
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US1620220A
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US1667585A
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US1818859A
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US1860172A
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US2189399A
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US2179108A
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US2182575A
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US2314917A
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US2364826A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-11 | 1951-11-10 | 1952-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-11 | 1955-11-10 | 1956-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-11 | 1959-11-10 | 1960-05-11 | $7700.00 | Window Closed / Lapsed |