US2946945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solar energy converting apparatus or the like
Assignee: Hoffman Electronics Corp
•
Filing: 1958-03-11
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Granted: 1960-07-26
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Expires: 1978-03-11
Abstract
No abstract record available.
Inventors
- 👤 Norman J Regnier
- 👤 Lawrence W Schmidt
- 👤 Donn E Kefes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:14
CPC Classifications
H; H02; H02S; H02S40/00; H02S40/40; H02S40/44; H10; H10F; H10F77/00; H10F77/60; H10F77/63; H10F77/68; Y; Y02; Y02E; Y02E10/00; Y02E10/50; Y02E10/60
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) | 1963-07-26 | 1964-01-25 | 1964-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-26 | 1968-01-25 | 1968-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-26 | 1972-01-25 | 1972-07-26 | $7700.00 | Window Closed / Lapsed |