US1678622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Florence p
Assignee: —
•
Filing: —
•
Granted: 1928-07-24
•
Expires: 1945-07-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:43
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/28; Y; Y10; Y10T; Y10T24/00; Y10T24/14; Y10T24/1412; Y10T24/1441; Y10T24/21; Y10T24/2189; Y10T24/44; Y10T24/44239; Y10T24/44966; Y10T24/44974; Y10T29/00; Y10T29/53; Y10T29/536
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) | 1931-07-24 | 1932-01-23 | 1932-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-07-24 | 1936-01-23 | 1936-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-07-24 | 1940-01-23 | 1940-07-24 | $7700.00 | Window Closed / Lapsed |