US2857156A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixing apparatus
Assignee: Societe dElectro Chimie dElectro Metallurgie et des Acieries Electriques Dugine SA SECEMAU
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Filing: 1956-10-01
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Granted: 1958-10-21
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Expires: 1976-10-01
Abstract
No abstract record available.
Inventors
- 👤 Greffe Andre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:48
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/02; F; F27; F27B; F27B14/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US310393A
Cited
US1783128A
Cited
GB190623342A
Cited
US894749A
Cited
US1879409A
Cited
US1917837A
Cited
US2100265A
Cited
US2067883A
Cited
DE888677C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |