US2471881A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable welding device
Assignee: ThyssenKrupp Budd Co
•
Filing: 1948-07-14
•
Granted: 1949-05-31
•
Expires: 1968-07-14
Abstract
No abstract record available.
Inventors
- 👤 Matthew J Manning
- 👤 Paul F Eisen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:32
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/30; B23K11/31
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US452042A
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US1086041A
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US1084083A
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US1086042A
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US1779365A
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US2236162A
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US2269726A
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US2318023A
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US2349835A
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US2426280A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-30 | 1952-11-29 | 1953-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-30 | 1956-11-29 | 1957-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-30 | 1960-11-29 | 1961-05-31 | $7700.00 | Window Closed / Lapsed |