US2432178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-softening apparatus having a valve for admitting reactivating agent thereto
Assignee: Westinghouse Electric Corp
•
Filing: 1944-07-04
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Granted: 1947-12-09
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Expires: 1964-07-04
Abstract
No abstract record available.
Inventors
- 👤 Homer J Shafer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:44
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US788359A
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US1675860A
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US1620717A
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US1867572A
Cited
US1918225A
Cited
US2065962A
Cited
US2366112A
Cited
US2347201A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-08 | 1951-06-09 | 1951-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-08 | 1955-06-09 | 1955-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-08 | 1959-06-09 | 1959-12-09 | $7700.00 | Window Closed / Lapsed |