Patent US2473601A successfully refreshed from Google Patents.
US2473601A
Expired / Lapsed
US
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Gas shielded direct-current arc welding
Assignee: Linde Air Products Co
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Filing: 1946-06-08
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Granted: 1949-06-21
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Expires: 1966-06-08
Abstract
No abstract record available.
Inventors
- 👤 Roscoe R Lobosco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:31
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1281796A
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US1294250A
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US1812103A
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US1749765A
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US1783013A
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US1870003A
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US1977278A
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US2258675A
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US2362510A
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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) | 1952-06-20 | 1952-12-20 | 1953-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-20 | 1956-12-20 | 1957-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-20 | 1960-12-20 | 1961-06-21 | $7700.00 | Window Closed / Lapsed |