Patent US2445801A successfully refreshed from Google Patents.
US2445801A
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US
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Method of electric resistance welding a laminated sheet metal structure
Assignee: Nitralloy Corp
•
Filing: 1942-08-06
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Granted: 1948-07-27
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Expires: 1962-08-06
Abstract
No abstract record available.
Inventors
- 👤 Partiot Maurice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:47
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/002; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49879; Y10T428/00; Y10T428/12; Y10T428/12347
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-27 | 1952-01-26 | 1952-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-27 | 1956-01-26 | 1956-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-27 | 1960-01-26 | 1960-07-27 | $7700.00 | Window Closed / Lapsed |