US2826794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the preparation and mixing of foundry moulding materials
Assignee: A Stotz A-G Eisengiesseri und Maschinenfabrik
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Filing: 1952-07-16
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Granted: 1958-03-18
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Expires: 1972-07-16
Abstract
No abstract record available.
Inventors
- 👤 Knipp Erwin
- 👤 Jellinghaus Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:46
CPC Classifications
B; B01; B01F; B01F29/00; B01F29/25; B01F29/60; B01F29/64; B22; B22C; B22C5/00; B22C5/04; B22C5/0409; B22C5/0459; B28; B28C; B28C5/00; B28C5/08; B28C5/18; B28C5/20; B28C5/24; B29; B29B; B29B7/00; B29B7/30; B29B7/34; B29B7/38; B29B7/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US828517A
Cited
US957646A
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US1026683A
Cited
US1706417A
Cited
GB338232A
Cited
US2196651A
Cited
US2144636A
Cited
US2193163A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-17 | 1961-09-16 | 1962-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-17 | 1965-09-16 | 1966-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-17 | 1969-09-16 | 1970-03-18 | $7700.00 | Window Closed / Lapsed |