Patent US3254404A successfully refreshed from Google Patents.
US3254404A
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US
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Method for butt welding
Assignee: Dana Inc
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Filing: 1962-03-19
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Granted: 1966-06-07
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Expires: 1982-03-19
Abstract
No abstract record available.
Inventors
- 👤 Harold L Becker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:28
CPC Classifications
B; B23; B23K; B23K13/00; B23K33/00; B23K33/004; B23K33/006; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7075; Y10T403/7077; Y10T403/7079; Y10T403/7088
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1246909A
Cited
US2392824A
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GB546737A
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US2374270A
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US2447085A
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US2678370A
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US2803732A
Cited
GB760740A
Cited
US3065536A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |