Patent US3054884A successfully refreshed from Google Patents.
US3054884A
Expired / Lapsed
US
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Power supply for electric welding
Assignee: Union Carbide Corp
•
Filing: 1960-03-09
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Granted: 1962-09-18
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Expires: 1980-03-09
Abstract
No abstract record available.
Inventors
- 👤 August F Manz
- 👤 Hopkins Charles
- 👤 De Wayne B Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:39
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/09; B23K9/091; B23K9/092
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2752529A
Cited
US2734981A
Cited
AT191714B
Cited
US2873356A
Cited
US2825004A
Cited
US2909647A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-17 | 1966-03-19 | 1966-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-17 | 1970-03-19 | 1970-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-17 | 1974-03-19 | 1974-09-18 | $7700.00 | Window Closed / Lapsed |