US2696847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sieve for the sifting of materials
Assignee: Akzo Nobel UK PLC
•
Filing: 1950-07-12
•
Granted: 1954-12-14
•
Expires: 1970-07-12
Abstract
No abstract record available.
Inventors
- 👤 Cotterill Ernest
- 👤 Robinson Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:30
CPC Classifications
A; A47; A47J; A47J43/00; A47J43/22; D; D03; D03D; D03D25/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1650998A
Cited
US2252554A
Cited
US2355635A
Cited
US2364404A
Cited
US2354435A
Cited
US2551175A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-13 | 1958-06-14 | 1958-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-13 | 1962-06-14 | 1962-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-13 | 1966-06-14 | 1966-12-14 | $7700.00 | Window Closed / Lapsed |