US2719210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of welding thin walled tubes from a single side
Assignee: Combustion Engineering Inc
•
Filing: 1953-06-10
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Granted: 1955-09-27
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Expires: 1973-06-10
Abstract
No abstract record available.
Inventors
- 👤 Edward C Chapman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:50
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/0026; B23K9/0052; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49373
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1589017A
Cited
US2206375A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-26 | 1959-03-28 | 1959-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-26 | 1963-03-28 | 1963-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-26 | 1967-03-28 | 1967-09-27 | $7700.00 | Window Closed / Lapsed |