US2783359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for arc welding of circular seams on pipes in substantially horizontal position
Assignee: Kraftanlagen AG
•
Filing: 1954-03-09
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Granted: 1957-02-26
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Expires: 1974-03-09
Abstract
No abstract record available.
Inventors
- 👤 Gunther Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:05
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/14; B23K9/142; B23K9/145
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1323556A
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US1566674A
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US1179919A
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US1435679A
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US1642825A
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US1604543A
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US1696455A
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US1964926A
Cited
GB549983A
Cited
US2653208A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-26 | 1960-08-27 | 1961-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-26 | 1964-08-27 | 1965-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-26 | 1968-08-27 | 1969-02-26 | $7700.00 | Window Closed / Lapsed |