Patent US2272158A successfully refreshed from Google Patents.
US2272158A
Expired / Lapsed
US
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Arc welding head
Assignee: General Electric Co
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Filing: 1940-11-28
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Granted: 1942-02-03
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Expires: 1960-11-28
Abstract
No abstract record available.
Inventors
- 👤 Jasper E Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:21
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/12; B23K9/133; B23K9/1336; B65; B65H; B65H51/00; B65H51/02; B65H51/04; B65H51/08; B65H51/10; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-02-02 | 1945-08-04 | 1946-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-02-02 | 1949-08-04 | 1950-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-02-02 | 1953-08-04 | 1954-02-03 | $7700.00 | Window Closed / Lapsed |