Patent US2857144A successfully refreshed from Google Patents.
US2857144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixing device
Assignee: Bayer Corp
•
Filing: 1956-05-15
•
Granted: 1958-10-21
•
Expires: 1976-05-15
Abstract
No abstract record available.
Inventors
- 👤 Jr Jesse Fred Gurley
- 👤 Jr Herman Nicholas Woebcke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:20
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/30; B29B7/34; B29B7/38; B29B7/40; B29B7/401; B01; B01F; B01F27/00; B01F27/27; B01F27/272; B01F27/2722; B29B7/405; B29B7/407; B01F25/00; B01F2025/91; B01F2025/911; B01F27/80
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1017286A
Cited
US1487208A
Cited
GB495107A
Cited
US2453088A
Cited
US2573440A
Cited
FR1074713A
Cited
US2754542A
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 |