US2888253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silo unloader having wall cleaning means
Assignee: VAN DALE Inc
•
Filing: 1953-06-24
•
Granted: 1959-05-26
•
Expires: 1973-06-24
Abstract
No abstract record available.
Inventors
- 👤 Frederick E Van Dusen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:14
CPC Classifications
A; A01; A01F; A01F25/00; A01F25/16; A01F25/20; A01F25/2009
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1336440A
Cited
US659112A
Cited
US672554A
Cited
US799753A
Cited
US1160660A
Cited
US1550311A
Cited
US1570085A
Cited
US2205757A
Cited
US2385632A
Cited
US2580306A
Cited
US2445056A
Cited
US2595333A
Cited
US2601608A
Cited
US2500043A
Cited
US2651438A
Cited
US2659916A
Cited
US2608815A
Cited
US2671696A
Cited
US2677474A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-25 | 1962-11-24 | 1963-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-25 | 1966-11-24 | 1967-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-25 | 1970-11-24 | 1971-05-26 | $7700.00 | Window Closed / Lapsed |