US3456803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drinking water treatment apparatus
Assignee: Culligan Inc
•
Filing: 1967-02-09
•
Granted: 1969-07-22
•
Expires: 1987-02-09
Abstract
No abstract record available.
Inventors
- 👤 Stanley F Rak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:51
CPC Classifications
C; C02; C02F; C02F9/00; C02F9/20; B; B01; B01D; B01D61/00; B01D61/02; B01D61/025; B01D61/04; B01D61/08; B01D61/081; H; H10; H10N; H10N10/00; B01D2311/00; B01D2311/04; B01D2311/06; B01D2313/00; B01D2313/12; B01D2313/22; B01D2313/221; B01D2313/50; B01D2313/501; B01D2315/00; B01D2315/06; C02F1/00; C02F1/001; C02F1/28; C02F1/283; C02F1/44; C02F1/441; C02F1/66; C02F2303/00; C02F2303/02
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |