Patent US2866240A successfully refreshed from Google Patents.
US2866240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanism for reducing porosity of die castings
Assignee: Individual
•
Filing: 1957-11-05
•
Granted: 1958-12-30
•
Expires: 1977-11-05
Abstract
No abstract record available.
Inventors
- 👤 Henry F Schroeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:11
CPC Classifications
B; B22; B22D; B22D17/00; B22D17/14; Y; Y10; Y10S; Y10S164/00; Y10S164/09
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |