US2467391A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of pressure welding metals by preheating with pressure application in the solidus phase and electric resistance heating in the liquids phase
Assignee: Babcock and Wilcox Co
•
Filing: 1944-03-21
•
Granted: 1949-04-19
•
Expires: 1964-03-21
Abstract
No abstract record available.
Inventors
- 👤 Howard J Kerr
- 👤 Otis R Carpenter
- 👤 Jr Frank W Armstrong
- 👤 Nicholas C Jessen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:19
CPC Classifications
B; B23; B23K; B23K28/00; B23K28/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US419032A
Cited
US1031812A
Cited
US2202405A
Cited
US2250870A
Cited
US2250869A
Cited
US2301173A
Cited
US2354983A
Cited
US2272968A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-18 | 1952-10-18 | 1953-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-18 | 1956-10-18 | 1957-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-18 | 1960-10-18 | 1961-04-19 | $7700.00 | Window Closed / Lapsed |