US3493496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purified water supply apparatus and method
Assignee: Desalination Systems Inc
•
Filing: 1968-05-13
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Granted: 1970-02-03
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Expires: 1988-05-13
Abstract
No abstract record available.
Inventors
- 👤 Donald T Bray
- 👤 Ross M Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:06
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/02; B01D61/08; B01D61/081; B01D61/10; B01D2313/00; B01D2313/12; B01D2313/24; B01D2313/50; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3115
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |