US3494835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for the desalination of sea water
Assignee: Individual
•
Filing: 1968-01-15
•
Granted: 1970-02-10
•
Expires: 1988-01-15
Abstract
No abstract record available.
Inventors
- 👤 Pierre Mahistre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:57
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/28; B01D1/2887; B01D1/02; Y; Y02; Y02A; Y02A20/00; Y02A20/124
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2899366A
Cited
US1966938A
Cited
US2863501A
Cited
US2793988A
Cited
US3147201A
Cited
US3290229A
Cited
US3214352A
Cited
US3294649A
Cited
US3340159A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-09 | 1973-08-11 | 1974-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-09 | 1977-08-11 | 1978-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-09 | 1981-08-11 | 1982-02-10 | $7700.00 | Window Closed / Lapsed |