US3477573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for screening bulk material
Assignee: Individual
•
Filing: 1967-04-18
•
Granted: 1969-11-11
•
Expires: 1987-04-18
Abstract
No abstract record available.
Inventors
- 👤 Hugo Andersson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:20
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/36; E02F3/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US424002A
Cited
US784134A
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US820434A
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US1418284A
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GB269877A
Cited
US1727944A
Cited
US2522343A
Cited
US2593359A
Cited
US2690840A
Cited
US3072257A
Cited
US3003265A
Cited
US3254767A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-10 | 1973-05-12 | 1973-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-10 | 1977-05-12 | 1977-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-10 | 1981-05-12 | 1981-11-11 | $7700.00 | Window Closed / Lapsed |