Patent US2989787A successfully refreshed from Google Patents.
Patent US2474643A successfully refreshed from Google Patents.
US2474643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of brazing cemented carbides to steel
Assignee: Carboloy Co Inc
•
Filing: 1947-06-04
•
Granted: 1949-06-28
•
Expires: 1967-06-04
Abstract
No abstract record available.
Inventors
- 👤 Clarence D Webb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:53
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/3006; B23K31/00; B23K31/02; B23K31/025; Y; Y10; Y10T; Y10T407/00; Y10T407/26
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1887373A
Cited
GB345171A
Cited
US1964972A
Cited
US1951856A
Cited
FR713475A
Cited
US1903077A
Cited
US1956233A
Cited
US2232176A
Cited
US2124438A
Cited
US2384204A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-27 | 1952-12-27 | 1953-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-27 | 1956-12-27 | 1957-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-27 | 1960-12-27 | 1961-06-28 | $7700.00 | Window Closed / Lapsed |