Patent US3492062A successfully refreshed from Google Patents.
US2807912A
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Pelagic solar still and method for supporting plant growth
Assignee: Individual
•
Filing: 1953-12-18
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Granted: 1957-10-01
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Expires: 1973-12-18
Abstract
No abstract record available.
Inventors
- 👤 Bjorksten Johan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:17
CPC Classifications
A; A01; A01G; A01G9/00; A01G9/24; A01G9/247; A01G31/00; A01G31/02; A01G2009/248; C; C02; C02F; C02F2103/00; C02F2103/08; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/25; Y02P; Y02P60/00; Y02P60/20; Y02P60/21; Y10; Y10S; Y10S159/00; Y10S159/902; Y10S159/903; Y10S159/906; Y10S203/00; Y10S203/18
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) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |