Patent US3129717A successfully refreshed from Google Patents.
US3129717A
Expired / Lapsed
US
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System for automatically adding a lime slurry to water
Assignee: NL Industries Inc
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Filing: 1960-05-23
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Granted: 1964-04-21
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Expires: 1980-05-23
Abstract
No abstract record available.
Inventors
- 👤 Earl L Main
- 👤 Jr William L Mann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:02
CPC Classifications
B; B01; B01F; B01F35/00; B01F35/80; B01F35/82; B01F23/00; B01F23/40; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2499; Y10T137/2509; Y10T137/8593; Y10T137/85954; Y10T137/877
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-21 | 1967-10-21 | 1968-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-21 | 1971-10-21 | 1972-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-21 | 1975-10-21 | 1976-04-21 | $7700.00 | Window Closed / Lapsed |