US3417870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reverse osmosis purification apparatus
Assignee: Gulf General Atomic Inc
•
Filing: 1965-03-22
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Granted: 1968-12-24
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Expires: 1985-03-22
Abstract
No abstract record available.
Inventors
- 👤 Donald T Bray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:30
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/22; A; A23; A23L; A23L2/00; A23L2/02; A23L2/08; A23L2/082; A23L2/085; A23L2/70; A23L2/72; A23L2/74; B01D63/00; B01D63/10; B01D63/101; B01D65/00; B01D65/003; B01D2313/00; B01D2313/12; Y; Y02; Y02A; Y02A20/00; Y02A20/124; Y02A20/131
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB489654A
Cited
US2650709A
Cited
US2599604A
Cited
US2756206A
Cited
US3171808A
Cited
FR1328826A
Cited
US3252272A
Cited
US3173867A
Cited
US3367504A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-24 | 1972-06-24 | 1972-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-24 | 1976-06-24 | 1976-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-24 | 1980-06-24 | 1980-12-24 | $7700.00 | Window Closed / Lapsed |