US2999833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for mixing a novalak resin and sand with an a-stage resin and sand to obtain a shell molding sand
Assignee: Ford Motor Co
•
Filing: 1954-04-09
•
Granted: 1961-09-12
•
Expires: 1974-04-09
Abstract
No abstract record available.
Inventors
- 👤 Julius M Blenenstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:56
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/20; B22C1/22; B22C1/2233; B22C1/2246; B22C1/2253
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1901325A
Cited
US2008723A
Cited
US2114229A
Cited
US2174755A
Cited
US2168981A
Cited
US2321783A
Cited
US2662067A
Cited
US2706188A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-11 | 1965-03-13 | 1965-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-11 | 1969-03-13 | 1969-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-11 | 1973-03-13 | 1973-09-12 | $7700.00 | Window Closed / Lapsed |