US2430989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanism for controlling welding current
Assignee: Individual
•
Filing: 1944-11-08
•
Granted: 1947-11-18
•
Expires: 1964-11-08
Abstract
No abstract record available.
Inventors
- 👤 Raymond J Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:40
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/10; B23K9/1087
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1187404A
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US1240901A
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US1371192A
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US1683059A
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US1589977A
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US1660161A
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US1664022A
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US1754353A
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US1729059A
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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) | 1950-11-17 | 1951-05-19 | 1951-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-17 | 1955-05-19 | 1955-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-17 | 1959-05-19 | 1959-11-18 | $7700.00 | Window Closed / Lapsed |