US2948922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screw conveyor
Assignee: Bayer AG
•
Filing: 1956-05-24
•
Granted: 1960-08-16
•
Expires: 1976-05-24
Abstract
No abstract record available.
Inventors
- 👤 Meskat Walter
- 👤 Pawlowski Juri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:00
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/30; B29B7/34; B29B7/38; B29B7/46; B29B7/48; A; A21; A21C; A21C1/00; A21C1/06; A21C1/065; B01; B01F; B01F27/00; B01F27/60; B01F27/72; B01F27/721; B01F27/723; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/345; B29C48/36; B29C48/395; B29C48/40; B29C48/405; B29C48/445; B29C48/50; B29C48/695; B01F27/05; B01F27/11; B01F27/114; B01F27/1143; B29C48/03; B29C48/05
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1516841A
Cited
US2127857A
Cited
US2048286A
Cited
US2427960A
Cited
FR902287A
Cited
US2543894A
Cited
US2615199A
Cited
US2488189A
Cited
US2662243A
Cited
US2653351A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-16 | 1964-02-15 | 1964-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-16 | 1968-02-15 | 1968-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-16 | 1972-02-15 | 1972-08-16 | $7700.00 | Window Closed / Lapsed |