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US2937422A
Expired / Lapsed
US
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Build-up welding
Assignee: K SCHWEISSWERK HALLE VEB
•
Filing: 1957-05-28
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Granted: 1960-05-24
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Expires: 1977-05-28
Abstract
No abstract record available.
Inventors
- 👤 Bohme Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:35
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/04; B23K9/044; B23K9/046; B23K9/048
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1531472A
Cited
US2123894A
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DE876572C
Cited
US2543936A
Cited
US2707813A
Cited
US2692411A
Cited
US2729578A
Cited
US2813190A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-24 | 1963-11-23 | 1964-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-24 | 1967-11-23 | 1968-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-24 | 1971-11-23 | 1972-05-24 | $7700.00 | Window Closed / Lapsed |