US2543668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric arc welding apparatus
Assignee: The General Electric Company PLC
•
Filing: 1949-05-21
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Granted: 1951-02-27
•
Expires: 1969-05-21
Abstract
No abstract record available.
Inventors
- 👤 Penrose James Ronald
- 👤 Donelan James Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:38
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/02; B23K9/025; B23K9/0253
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1415848A
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USRE20035E
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US1298590A
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US1217431A
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US1287774A
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US1493529A
Cited
US1580020A
Cited
US1570452A
Cited
GB246565A
Cited
US2330503A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-26 | 1954-08-28 | 1955-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-26 | 1958-08-28 | 1959-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-26 | 1962-08-28 | 1963-02-27 | $7700.00 | Window Closed / Lapsed |