US3367504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spirally wrapped reverse osmosis membrane cell
Assignee: Gulf General Atomic Inc
•
Filing: 1964-12-21
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Granted: 1968-02-06
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Expires: 1984-12-21
Abstract
No abstract record available.
Inventors
- 👤 Julius C Westmoreland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:35
CPC Classifications
B; B01; B01D; B01D69/00; B01D69/10; B01D69/106; B01D69/105
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB489654A
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US2650709A
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US2599604A
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US2741595A
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US2756206A
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US2854142A
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US2982416A
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US3171808A
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FR1328826A
Cited
US3252272A
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US3173867A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-05 | 1971-08-07 | 1972-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-05 | 1975-08-07 | 1976-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-05 | 1979-08-07 | 1980-02-06 | $7700.00 | Window Closed / Lapsed |