Patent US3649532A successfully refreshed from Google Patents.
US3649532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating water
Assignee: Individual
•
Filing: 1970-07-20
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Granted: 1972-03-14
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Expires: 1990-07-20
Abstract
Abstract A COMPACT, ONE TANK SYSTEM IS PROVIDED FOR TREATING WATER FROM WELLS COMPRISING AERATING, STORING, NEUTRALIZING, OXIDIZING AND FILTERING IN A SINGLE, RELATIVELY SIMPLE MECHANICAL, INEXPENSIVE SETUP.
Inventors
- 👤 John Oliver Mclean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:33
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/58; C02F1/62; C02F1/64; C02F1/645
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) | 1975-03-14 | 1975-09-13 | 1976-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-14 | 1979-09-13 | 1980-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-14 | 1983-09-13 | 1984-03-14 | $7700.00 | Window Closed / Lapsed |