Patent US1885762A successfully refreshed from Google Patents.
US1885762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screen
Assignee: Individual
•
Filing: 1930-02-04
•
Granted: 1932-11-01
•
Expires: 1950-02-04
Abstract
No abstract record available.
Inventors
- 👤 Eugene P Polushkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:38
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/44; B01D29/445; B01D35/00; B01D35/18
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) | 1935-11-01 | 1936-05-02 | 1936-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-11-01 | 1940-05-02 | 1940-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-11-01 | 1944-05-02 | 1944-11-01 | $7700.00 | Window Closed / Lapsed |