Patent US1960904A successfully refreshed from Google Patents.
US1960904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Settler
Assignee: Individual
•
Filing: 1932-03-26
•
Granted: 1934-05-29
•
Expires: 1952-03-26
Abstract
No abstract record available.
Inventors
- 👤 Emily F Gilchrist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:30
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/10; B01D21/12; B01D21/14; B01D21/003; B01D21/0036; B01D21/18; B01D21/186; B01D21/24; B01D21/2427; B01D21/2433; B01D21/2444
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) | 1937-05-28 | 1937-11-27 | 1938-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-05-28 | 1941-11-27 | 1942-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-05-28 | 1945-11-27 | 1946-05-29 | $7700.00 | Window Closed / Lapsed |