Patent US3489009A successfully refreshed from Google Patents.
Patent US3250397A successfully refreshed from Google Patents.
US3250397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water conditioning filter unit
Assignee: Individual
•
Filing: 1962-01-16
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Granted: 1966-05-10
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Expires: 1982-01-16
Abstract
No abstract record available.
Inventors
- 👤 Floyd J Moltchan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:47
CPC Classifications
B; B01; B01D; B01D37/00; B01D37/02; B01D37/025; C; C02; C02F; C02F1/00; C02F1/42; C02F2201/00; C02F2201/002; C02F2201/006
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) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |