Patent US2824948A successfully refreshed from Google Patents.
US2824948A
Expired / Lapsed
US
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Method of electric arc-welding
Assignee: US Philips Corp
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Filing: 1954-03-08
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Granted: 1958-02-25
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Expires: 1974-03-08
Abstract
No abstract record available.
Inventors
- 👤 Willigen Paul Christiaan V Der
- 👤 Bienfait Henri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:50
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/38; B23K35/24; B23K35/30; B23K35/3053
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1350317A
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US1501266A
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US1452781A
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US1468937A
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US1746205A
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US1794042A
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US1972463A
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US2140237A
Cited
US2504867A
Cited
US2621278A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-24 | 1961-08-26 | 1962-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-24 | 1965-08-26 | 1966-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-24 | 1969-08-26 | 1970-02-25 | $7700.00 | Window Closed / Lapsed |