US3478531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Saline water conversion system
Assignee: Blaw Knox Co
•
Filing: 1966-07-22
•
Granted: 1969-11-18
•
Expires: 1986-07-22
Abstract
No abstract record available.
Inventors
- 👤 George B Karnofsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:54
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/22; C02F2103/00; C02F2103/08; Y; Y02; Y02A; Y02A20/00; Y02A20/124
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3079761A
Cited
US3119772A
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US3177673A
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US3217505A
Cited
US3205672A
Cited
US3314881A
Cited
US3304734A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-17 | 1973-05-19 | 1973-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-17 | 1977-05-19 | 1977-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-17 | 1981-05-19 | 1981-11-18 | $7700.00 | Window Closed / Lapsed |