Patent US2685631A successfully refreshed from Google Patents.
US2685631A
Expired / Lapsed
US
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Gas shielded arc welding torch
Assignee: Union Carbide Corp
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Filing: 1951-05-26
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Granted: 1954-08-03
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Expires: 1971-05-26
Abstract
No abstract record available.
Inventors
- 👤 Arthur P Scheller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:11
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/24; B23K9/28; B23K9/29; B23K9/291; B23K9/296; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17411; Y10T279/17487; Y10T279/17504; Y10T279/17529; Y10T279/17538
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB558802A
Cited
US2393199A
Cited
US2468808A
Cited
US2512706A
Cited
US2512707A
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US2571684A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-02 | 1958-02-01 | 1958-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-02 | 1962-02-01 | 1962-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-02 | 1966-02-01 | 1966-08-03 | $7700.00 | Window Closed / Lapsed |