US2572082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Service or rental type water softener and means and method for regenerating same
Assignee: Individual
•
Filing: 1948-02-26
•
Granted: 1951-10-23
•
Expires: 1968-02-26
Abstract
No abstract record available.
Inventors
- 👤 James E Welsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:14
CPC Classifications
B; B01; B01J; B01J49/00; B01J49/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1276629A
Cited
US1763784A
Cited
US1740199A
Cited
US1916367A
Cited
US2087157A
Cited
US2252065A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-22 | 1955-04-23 | 1955-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-22 | 1959-04-23 | 1959-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-22 | 1963-04-23 | 1963-10-23 | $7700.00 | Window Closed / Lapsed |