US2768950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controls for water softeners
Assignee: Lindsay Co
•
Filing: 1952-08-01
•
Granted: 1956-10-30
•
Expires: 1972-08-01
Abstract
No abstract record available.
Inventors
- 👤 Benjamin H Kryzer
- 👤 Lynn G Lindsay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:10
CPC Classifications
B; B01; B01J; B01J49/00; B01J49/80; B01J49/85; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/877; Y10T137/87901; Y10T137/87917
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2673182A
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US2610945A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-30 | 1960-04-30 | 1960-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-30 | 1964-04-30 | 1964-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-30 | 1968-04-30 | 1968-10-30 | $7700.00 | Window Closed / Lapsed |