US2170601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing material for purifying liquids
Assignee: Baugh and Sons Co
•
Filing: 1937-01-08
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Granted: 1939-08-22
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Expires: 1957-01-08
Abstract
No abstract record available.
Inventors
- 👤 Stansbury M Wilson
- 👤 William H Waggaman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:07
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/28; C02F1/283; B; B01; B01J; B01J20/00; B01J20/02; B01J20/04; B01J20/048; B01J20/30; B01J20/3028; B01J20/3078; B01J2220/00; B01J2220/40; B01J2220/42; C02F1/001
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) | 1942-08-21 | 1943-02-20 | 1943-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-08-21 | 1947-02-20 | 1947-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-08-21 | 1951-02-20 | 1951-08-22 | $7700.00 | Window Closed / Lapsed |