Patent US3551995A successfully refreshed from Google Patents.
US3551995A
Expired / Lapsed
US
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Cladding headers having tubes attached thereto
Assignee: Fives Lille Cail
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Filing: 1968-01-04
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Granted: 1971-01-05
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Expires: 1988-01-04
Abstract
Abstract TUBES ARE INSERTED INTO THE BORES OF A HEADER TO BE JOINED THERETO, AND THE OUTER FACE OF THE HEADER IS SURFACED OR CLAD AFTER THE ENDS OF THE TUBES HAVE BEEN PLUGGED. THE SURFACING OR CLADDING IS APPLIED BY ANY SUITABLE WELDING PROCESS, AND IF IT EXTENDS OVER THE TUBE ENDS, THE TUBES ARE SIMULTANEOUSLY WELDED TO THE HEADER.
Inventors
- 👤 Emile Marechal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:42
CPC Classifications
A; A01; A01B; A01B49/00; A01B49/04; B; B23; B23K; B23K9/00; B23K9/02; B23K9/028; B23K9/0288; F; F28; F28F; F28F9/00; F28F9/02; F28F9/04; F28F9/16; F28F9/18; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49373; Y10T29/4981; Y10T29/49826; Y10T29/49888; Y10T29/4998; Y10T29/49982; Y10T29/49986
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |