Patent US20110282964A1 successfully refreshed from Google Patents.
US2941491A
Expired / Lapsed
US
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Clamping mechanism for seam welding machines
Assignee: Individual
•
Filing: 1953-07-21
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Granted: 1960-06-21
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Expires: 1973-07-21
Abstract
No abstract record available.
Inventors
- 👤 Lloyd H Knost
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:37
CPC Classifications
B; B23; B23K; B23K37/00; B23K37/04; B23K37/053; B23K37/0535
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1840737A
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US1987691A
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US2256879A
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US2371376A
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GB644590A
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US2607310A
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US2685629A
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US2696547A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |