US2846554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Butt welding of metal tubes
Assignee: METALLURG TECH ET COMMERCIALE
•
Filing: 1955-11-28
•
Granted: 1958-08-05
•
Expires: 1975-11-28
Abstract
No abstract record available.
Inventors
- 👤 Baffrey Antoine Rodolphe
- 👤 Frumkin Raphael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:34
CPC Classifications
B; B23; B23K; B23K13/00; B23K13/01; B23K13/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1512787A
Cited
US1903359A
Cited
US2086305A
Cited
US1986370A
Cited
US2483973A
Cited
GB644821A
Cited
FR1040555A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |