US3524810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and arrangement for chemical clarifying of liquids
Assignee: RUDNE A NERUDNE DOLY NARODNI P
•
Filing: 1968-07-01
•
Granted: 1970-08-18
•
Expires: 1988-07-01
Abstract
No abstract record available.
Inventors
- 👤 Svatopluk Mackrle
- 👤 Vladimir Mackrle
- 👤 Oldrich Dracka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:25
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/52; C02F1/5281; B; B01; B01D; B01D21/00; B01D21/0012; B01D21/0018; B01D21/02; B01D37/00; B01D37/03; B01D24/00; B01D24/02; B01D24/04; B01D24/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2179246A
Cited
US2411386A
Cited
US2860786A
Cited
US2948400A
Cited
US3130167A
Cited
US2969149A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-17 | 1974-02-16 | 1974-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-17 | 1978-02-16 | 1978-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-17 | 1982-02-16 | 1982-08-18 | $7700.00 | Window Closed / Lapsed |