Patent US3382980A successfully refreshed from Google Patents.
US3382980A
Expired / Lapsed
US
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Ozone water treatment plant
Assignee: Welsbach Corp
•
Filing: 1964-10-29
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Granted: 1968-05-14
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Expires: 1984-10-29
Abstract
No abstract record available.
Inventors
- 👤 Rene N Silva
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:37
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/72; C02F1/76; C02F1/763; C01; C01B; C01B13/00; C01B13/10; C02F1/78; Y; Y10; Y10S; Y10S261/00; Y10S261/42; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7358; Y10T137/8593; Y10T137/86187; Y10T137/86212
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2767965A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-14 | 1971-11-13 | 1972-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-14 | 1975-11-13 | 1976-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-14 | 1979-11-13 | 1980-05-14 | $7700.00 | Window Closed / Lapsed |