Patent US1989019A successfully refreshed from Google Patents.
US1989019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Agitator
Assignee: Individual
•
Filing: 1933-04-18
•
Granted: 1935-01-22
•
Expires: 1953-04-18
Abstract
No abstract record available.
Inventors
- 👤 O'keeffe Thomas Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:56
CPC Classifications
B; B44; B44D; B44D3/00; B44D3/06; B01; B01F; B01F31/00; B01F31/10; B01F33/00; B01F33/50; B01F33/501; B01F33/5011; B01F35/00; B01F35/30; B01F35/32; B01F35/32005; B01F35/3202; B01F35/32021; B01F35/50; B01F35/53; B01F35/531
Claims Analysis
Total Claims: 0
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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) | 1938-01-21 | 1938-07-23 | 1939-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-01-21 | 1942-07-23 | 1943-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-01-21 | 1946-07-23 | 1947-01-22 | $7700.00 | Window Closed / Lapsed |