US2672665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Casting metal
Assignee: Kaiser Aluminum and Chemical Corp
•
Filing: 1950-03-13
•
Granted: 1954-03-23
•
Expires: 1970-03-13
Abstract
No abstract record available.
Inventors
- 👤 Owen M Gardner
- 👤 Albert J Stone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:39
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/04; B22D11/041
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2128943A
Cited
US2121280A
Cited
FR826273A
Cited
US2148391A
Cited
US2225373A
Cited
US2242350A
Cited
US2527545A
Cited
US2565959A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-22 | 1957-09-21 | 1958-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-22 | 1961-09-21 | 1962-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-22 | 1965-09-21 | 1966-03-23 | $7700.00 | Window Closed / Lapsed |