US3438490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for wet sizing finely divided solid materials
Assignee: WS Tyler Inc
•
Filing: 1964-07-24
•
Granted: 1969-04-15
•
Expires: 1984-07-24
Abstract
No abstract record available.
Inventors
- 👤 Joseph Le Roy Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:52
CPC Classifications
B; B03; B03B; B03B5/00; B03B5/02; B03B5/04; B07; B07B; B07B1/00; B07B1/28; B07B1/36
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US310181A
Cited
US1039206A
Cited
US1040804A
Cited
US1983676A
Cited
US2540517A
Cited
US2723032A
Cited
DE902601C
Cited
US2906401A
Cited
US3064806A
Cited
US3179251A
Cited
GB962386A
Cited
US3323646A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |