US2688065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric welder
Assignee: Individual
•
Filing: 1951-09-11
•
Granted: 1954-08-31
•
Expires: 1971-09-11
Abstract
No abstract record available.
Inventors
- 👤 Nelson O Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:34
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/002; B23K11/004; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18888; Y10T74/1892
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB519353A
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US2507022A
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US2319385A
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US2413391A
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US2432292A
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US2452009A
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US2474816A
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US2454338A
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US2571313A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-30 | 1958-03-01 | 1958-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-30 | 1962-03-01 | 1962-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-30 | 1966-03-01 | 1966-08-31 | $7700.00 | Window Closed / Lapsed |