Patent EP0092809A2 successfully refreshed from Google Patents.
US3477576A
Expired / Lapsed
US
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Water softener control
Assignee: Honeywell Inc
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Filing: 1966-10-03
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Granted: 1969-11-11
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Expires: 1986-10-03
Abstract
No abstract record available.
Inventors
- 👤 James R Luck
- 👤 Frank S Mills
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:07
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/023; B; B01; B01J; B01J49/00; B01J49/80; B01J49/85
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3176844A
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US3220552A
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US3178901A
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US3246759A
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US3282426A
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US3250392A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-10 | 1973-05-12 | 1973-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-10 | 1977-05-12 | 1977-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-10 | 1981-05-12 | 1981-11-11 | $7700.00 | Window Closed / Lapsed |