Patent US4429566A successfully refreshed from Google Patents.
US1154470A
Expired / Lapsed
US
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Electric welding-machine.
Assignee: WINFIELD ELECTRIC WELDING MACHINE Co
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Filing: 1911-06-09
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Granted: 1915-09-21
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Expires: 1931-06-09
Abstract
No abstract record available.
Inventors
- 👤 William C Winfield
- 👤 Albertis C Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:56
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/30; B23K11/3009; B23K11/3018
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) | 1918-09-20 | 1919-03-22 | 1919-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1922-09-20 | 1923-03-22 | 1923-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1926-09-20 | 1927-03-22 | 1927-09-21 | $7700.00 | Window Closed / Lapsed |