Patent US1917531A successfully refreshed from Google Patents.
US1917531A
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Electric arc welding apparatus
Assignee: Lincoln Electric Co
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Filing: 1931-09-09
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Granted: 1933-07-11
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Expires: 1951-09-09
Abstract
No abstract record available.
Inventors
- 👤 James F Lincoln
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:37
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/12; B23K9/133; B23K9/1336; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17128; Y10T279/17162; Y10T279/17666; Y10T279/17692; Y10T279/17743; Y10T279/17752; Y10T279/17761; Y10T279/17811; Y10T279/17957; Y10T403/00; Y10T403/53; Y10T403/535; Y10T403/60; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19372
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) | 1936-07-10 | 1937-01-09 | 1937-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-07-10 | 1941-01-09 | 1941-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-07-10 | 1945-01-09 | 1945-07-11 | $7700.00 | Window Closed / Lapsed |