US2105826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concentration of nonmetallic minerals
Assignee: PHOSPHATE RECOVERY Corp
•
Filing: 1935-10-18
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Granted: 1938-01-18
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Expires: 1955-10-18
Abstract
No abstract record available.
Inventors
- 👤 Francis X Tartaron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:29
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/008; B03D1/002; B03D1/006; B03D2201/00; B03D2201/007; B03D2201/02; B03D2203/00; B03D2203/02; B03D2203/04; B03D2203/06; Y; Y10; Y10S; Y10S209/00; Y10S209/902
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) | 1941-01-17 | 1941-07-19 | 1942-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-01-17 | 1945-07-19 | 1946-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-01-17 | 1949-07-19 | 1950-01-18 | $7700.00 | Window Closed / Lapsed |