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Patent US2769080A successfully refreshed from Google Patents.
US2769080A
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Electric welding machine and control means therefor
Assignee: Cutler Hammer Inc
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Filing: 1951-05-31
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Granted: 1956-10-30
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Expires: 1971-05-31
Abstract
No abstract record available.
Inventors
- 👤 Jerome B Welch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:43
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/24; B23K11/248
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2329122A
Cited
US2319524A
Cited
US2356859A
Cited
US2477117A
Cited
US2600519A
Cited
US2508467A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-30 | 1960-04-30 | 1960-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-30 | 1964-04-30 | 1964-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-30 | 1968-04-30 | 1968-10-30 | $7700.00 | Window Closed / Lapsed |