US1312976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
groch
Assignee: —
•
Filing: —
•
Granted: 1919-08-12
•
Expires: 1936-08-12
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:32
CPC Classifications
B; B01; B01D; B01D17/00; B01D17/02; B01D17/0208; B01D17/0214
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) | 1922-08-11 | 1923-02-10 | 1923-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1926-08-11 | 1927-02-10 | 1927-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1930-08-11 | 1931-02-10 | 1931-08-12 | $7700.00 | Window Closed / Lapsed |