US2800568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for narrow lap or semi-mash seam welding
Assignee: Taylor Winfield Corp
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Filing: 1955-09-28
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Granted: 1957-07-23
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Expires: 1975-09-28
Abstract
No abstract record available.
Inventors
- 👤 Joseph H Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:37
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/002; B23K11/0026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |