US2392901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter
Assignee: Individual
•
Filing: 1943-03-20
•
Granted: 1946-01-15
•
Expires: 1963-03-20
Abstract
No abstract record available.
Inventors
- 👤 Cleo E Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:12
CPC Classifications
F; F16; F16N; F16N39/00; F16N39/002; B; B01; B01D; B01D27/00; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/21; B01D29/216; B01D29/50; B01D29/56; B01D29/58; B01D35/00; B01D35/14; B01D35/147; B01D36/00; B01D36/001; B01D2201/00; B01D2201/04; B01D2201/0415; B01D2201/0461; B01D2201/18; B01D2201/182; B01D37/00
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) | 1949-01-14 | 1949-07-16 | 1950-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-01-14 | 1953-07-16 | 1954-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-01-14 | 1957-07-16 | 1958-01-15 | $7700.00 | Window Closed / Lapsed |