Patent US2710997A successfully refreshed from Google Patents.
US2710997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing bimetal castings
Assignee: Campbell Wyant and Cannon Foundry Co
•
Filing: 1952-06-13
•
Granted: 1955-06-21
•
Expires: 1972-06-13
Abstract
No abstract record available.
Inventors
- 👤 William R Krepps
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:00
CPC Classifications
B; B22; B22D; B22D13/00; B22D13/02; B22D19/00; B22D19/16
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1377372A
Cited
US1514129A
Cited
US1466826A
Cited
US1532690A
Cited
US1615877A
Cited
US1707117A
Cited
US1733661A
Cited
US2008196A
Cited
US1943720A
Cited
US2087347A
Cited
US2178163A
Cited
US2265740A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-20 | 1958-12-20 | 1959-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-20 | 1962-12-20 | 1963-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-20 | 1966-12-20 | 1967-06-21 | $7700.00 | Window Closed / Lapsed |