US3415719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible solar still with water vapor permeable membrane
Assignee: Melpar Inc
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Filing: 1966-05-11
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Granted: 1968-12-10
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Expires: 1986-05-11
Abstract
No abstract record available.
Inventors
- 👤 Telkes Maria
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:20
CPC Classifications
B; B01; B01D; B01D5/00; B01D5/0057; B01D5/006; B01D5/0066; C; C02; C02F; C02F1/00; C02F1/02; C02F1/04; C02F1/14; C02F1/18; F; F24; F24S; F24S20/00; F24S20/70; C02F2103/00; C02F2103/08; Y; Y02; Y02A; Y02A20/00; Y02A20/124; Y02A20/138; Y02A20/142; Y02A20/20; Y02A20/208; Y02A20/212; Y02E; Y02E10/00; Y02E10/40; Y02E10/47; Y10; Y10S; Y10S159/00; Y10S159/27; Y10S159/902; Y10S159/903; Y10S159/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2402737A
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US2405118A
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US2427262A
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US2445350A
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US2412466A
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US2455834A
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US2455835A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-10 | 1972-06-10 | 1972-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-10 | 1976-06-10 | 1976-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-10 | 1980-06-10 | 1980-12-10 | $7700.00 | Window Closed / Lapsed |