Patent US3005254A successfully refreshed from Google Patents.
Patent US1498389A successfully refreshed from Google Patents.
US1498389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and means for treating liquids
Assignee: CHEMICAL EQUIPMENT Co
•
Filing: 1920-05-03
•
Granted: 1924-06-17
•
Expires: 1940-05-03
Abstract
No abstract record available.
Inventors
- 👤 Bour Harry E La
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:20
CPC Classifications
C; C11; C11B; C11B3/00; C11B3/12; C11B3/14
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1927-06-17 | 1927-12-17 | 1928-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-06-17 | 1931-12-17 | 1932-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-06-17 | 1935-12-17 | 1936-06-17 | $7700.00 | Window Closed / Lapsed |