US3406741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for treating liquids
Assignee: Individual
•
Filing: 1966-11-14
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Granted: 1968-10-22
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Expires: 1986-11-14
Abstract
No abstract record available.
Inventors
- 👤 John M Leach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:18
CPC Classifications
F; F28; F28G; F28G1/00; F28G1/12; F28G1/125; F28F; F28F19/00; F28F19/008; F28F27/00; F28G15/00; F28G15/04; F28G15/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-22 | 1972-04-22 | 1972-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-22 | 1976-04-22 | 1976-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-22 | 1980-04-22 | 1980-10-22 | $7700.00 | Window Closed / Lapsed |