Patent US2571000A successfully refreshed from Google Patents.
US2571000A
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US
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Water softening system and apparatus
Assignee: MCKAYS Co
•
Filing: 1948-05-01
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Granted: 1951-10-09
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Expires: 1968-05-01
Abstract
No abstract record available.
Inventors
- 👤 Lawrence E Albertson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:41
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/42; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86389; Y10T137/87169; Y10T137/87233; Y10T137/87241
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1743026A
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US1910004A
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US1831656A
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US1749622A
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US2082623A
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US2137406A
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US2245767A
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US2309032A
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US2247964A
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US2347201A
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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) | 1954-10-08 | 1955-04-09 | 1955-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-08 | 1959-04-09 | 1959-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-08 | 1963-04-09 | 1963-10-09 | $7700.00 | Window Closed / Lapsed |