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Patent US2904613A successfully refreshed from Google Patents.
US2904613A
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Large area solar energy converter and method for making the same
Assignee: Hoffman Electronics Corp
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Filing: 1957-08-26
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Granted: 1959-09-15
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Expires: 1977-08-26
Abstract
No abstract record available.
Inventors
- 👤 Paradise Maurice Elliott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:47
CPC Classifications
H; H10; H10F; H10F77/00; H10F77/10; H10F77/14; H10F77/148; H10F77/16; H10F77/162; Y; Y02; Y02E; Y02E10/00; Y02E10/50; Y10; Y10S; Y10S148/00; Y10S148/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2423125A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |