Patent US2482093A successfully refreshed from Google Patents.
US2482093A
Expired / Lapsed
US
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Process for aluminothermic welding
Assignee: Electric Railway Improvement Co
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Filing: 1946-08-21
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Granted: 1949-09-20
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Expires: 1966-08-21
Abstract
No abstract record available.
Inventors
- 👤 Noble G Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:51
CPC Classifications
E; E01; E01B; E01B11/00; E01B11/44; E01B11/52; B; B23; B23K; B23K35/00; B23K35/22; B23K35/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-09-19 | 1953-03-21 | 1953-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-19 | 1957-03-21 | 1957-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-19 | 1961-03-21 | 1961-09-20 | $7700.00 | Window Closed / Lapsed |