Patent US2957975A successfully refreshed from Google Patents.
US2957975A
Expired / Lapsed
US
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Method and apparatus for maintaining welding electrode wheels and the like
Assignee: Taylor Winfield Corp
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Filing: 1958-07-28
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Granted: 1960-10-25
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Expires: 1978-07-28
Abstract
No abstract record available.
Inventors
- 👤 Roy W Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:22
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1585740A
Cited
GB313530A
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US1822371A
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US1862108A
Cited
US2065511A
Cited
US2250645A
Cited
US2337037A
Cited
US2503288A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-25 | 1964-04-25 | 1964-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-25 | 1968-04-25 | 1968-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-25 | 1972-04-25 | 1972-10-25 | $7700.00 | Window Closed / Lapsed |