Patent US3517775A successfully refreshed from Google Patents.
Patent US3407122A successfully refreshed from Google Patents.
US3407122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solar still with a cassegranian optical system
Assignee: Bechtel International Corp
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Filing: 1963-07-23
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Granted: 1968-10-22
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Expires: 1983-07-23
Abstract
No abstract record available.
Inventors
- 👤 Iii Ben Wade Oakes Dickinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:36
CPC Classifications
F; F24; F24S; F24S23/00; F24S50/00; F24S50/20; F24S23/30; F24S23/70; F24S23/79; Y; Y02; Y02E; Y02E10/00; Y02E10/40; Y02E10/44; Y02E10/47
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
APPARATUS FOR RECOVERING WATER AND VALUABLE CHEMICALS FROM LUNAR AND SIMILAR SURFACES COMPRISING IN COMBINATION: (A) A CHAMBER HAVING AN OPEN BOTTOM ADAPTED TO BE MOVED OVER A SURFACE TO BE TREATED, (B) SEALING MEANS AROUND THE BOTTOM OF SAID CHAMBER, (C) A CASSEGRANIAN OPTICAL SYSTEM FOR CONCENTRATING THE SUN''S RAYS ON A SMALL AREA WITHIN SAID CHAMBER, (D) A TRAP DOOR STRUCTURE FOR REMOVING WASTE SOLID MATERIAL FROM SAID CHAMBER AND (E) MEANS FOR RECOVERING VOLATIZED MATERIAL FROM SAID CHAMBER.
Claim 2
Dependent Claim
81 words
APPARATUS FOR RECOVERING WATER AND VALUABLE CHEMICALS FROM LUNAR AND SIMILAR SURFACES COMPRISING IN COMBINATION: (A) A CHAMBER HAVING AN OPEN BOTTOM ADAPTED TO BE MOVED OVER A SURFACE TO BE TREATED, (B) SEALING MEANS AROUND THE BOTTOM OF SAID CHAMBER, (C) A CASSEGRANIAN OPTICAL SYSTEM FOR CONCENTRATING THE SUN''S RAYS ON A SMALL AREA WITHIN SAID CHAMBER, (D) A TRAP DOOR STRUCTURE FOR REMOVING WASTE SOLID MATERIAL FROM SAID CHAMBER AND (E) MEANS FOR RECOVERING VOLATIZED MATERIAL FROM SAID CHAMBER.
References Cited (Backward Citations)
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Cited
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Cited
US2803591A
Cited
US2820744A
Cited
US2902028A
Cited
GB974650A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-22 | 1972-04-22 | 1972-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-22 | 1976-04-22 | 1976-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-22 | 1980-04-22 | 1980-10-22 | $7700.00 | Window Closed / Lapsed |