US1655859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleansing means for liquid receivers
Assignee: Standard Oil Co
•
Filing: 1925-05-25
•
Granted: 1928-01-10
•
Expires: 1945-05-25
Abstract
No abstract record available.
Inventors
- 👤 Herman J Engbrecht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:59
CPC Classifications
F; F01; F01M; F01M11/00; F01M11/04; F01M11/045; F02; F02B; F02B77/00; F02B77/04; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87571
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) | 1931-01-09 | 1931-07-11 | 1932-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-01-09 | 1935-07-11 | 1936-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-01-09 | 1939-07-11 | 1940-01-10 | $7700.00 | Window Closed / Lapsed |