Patent US2969788A successfully refreshed from Google Patents.
US2969788A
Expired / Lapsed
US
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Solar energy collectors
Assignee: Coleman Co Inc
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Filing: 1957-07-01
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Granted: 1961-01-31
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Expires: 1977-07-01
Abstract
No abstract record available.
Inventors
- 👤 Alwin B Newton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:10
CPC Classifications
F; F24; F24S; F24S10/00; F24S10/70; F24S10/75; F24S50/00; F24S50/80; Y; Y02; Y02E; Y02E10/00; Y02E10/40; Y02E10/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US748696A
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US966070A
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US980505A
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US1074219A
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US1201536A
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US1946184A
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US2249642A
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US2316191A
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US2293735A
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US2625930A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-31 | 1964-08-01 | 1965-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-31 | 1968-08-01 | 1969-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-31 | 1972-08-01 | 1973-01-31 | $7700.00 | Window Closed / Lapsed |