US3539008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screening apparatus employing rotating cylindrical screen and stationary feed means
Assignee: Sweco Inc
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Filing: 1967-05-22
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Granted: 1970-11-10
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Expires: 1987-05-22
Abstract
No abstract record available.
Inventors
- 👤 Richard K Mckibben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:14
CPC Classifications
B; B01; B01D; B01D36/00; B01D36/02; B01D33/00; B01D33/01; B01D33/03; B01D33/0307; B01D33/033; B01D33/0338; B01D33/0346; B01D33/0376; B01D33/06; B01D33/11; B01D33/35; B01D33/41; B01D33/42; B01D33/44; B01D33/48; B01D33/50; B01D33/70; B01D33/72; B01D33/722; B01D33/76
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-09 | 1974-05-11 | 1974-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-09 | 1978-05-11 | 1978-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-09 | 1982-05-11 | 1982-11-10 | $7700.00 | Window Closed / Lapsed |