US1993214A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thickener for pulp stock or the like
Assignee: Individual
•
Filing: 1932-11-21
•
Granted: 1935-03-05
•
Expires: 1952-11-21
Abstract
No abstract record available.
Inventors
- 👤 Paul O Hass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:36
CPC Classifications
D; D21; D21C; D21C9/00; D21C9/18; B; B01; B01D; B01D29/00; B01D29/11; B01D29/117; B01D29/118; B01D29/62; B01D29/64; B01D29/6438; B01D29/6446; B01D29/76; B01D29/80; B01D29/82; B01D2201/00; B01D2201/02
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) | 1938-03-04 | 1938-09-03 | 1939-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-03-04 | 1942-09-03 | 1943-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-03-04 | 1946-09-03 | 1947-03-05 | $7700.00 | Window Closed / Lapsed |