Patent US2497629A successfully refreshed from Google Patents.
US2497629A
Expired / Lapsed
US
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Shielded arc welding
Assignee: Airco Inc
•
Filing: 1948-12-10
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Granted: 1950-02-14
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Expires: 1968-12-10
Abstract
No abstract record available.
Inventors
- 👤 Perry J Rieppel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:50
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1309696A
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US904482A
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US1746191A
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US1746081A
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US2121693A
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US2043960A
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US2111226A
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US2311669A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-13 | 1953-08-15 | 1954-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-13 | 1957-08-15 | 1958-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-13 | 1961-08-15 | 1962-02-14 | $7700.00 | Window Closed / Lapsed |