US2622117A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photovoltaic device
Assignee: Purdue Research Foundation
•
Filing: 1950-07-19
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Granted: 1952-12-16
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Expires: 1970-07-19
Abstract
No abstract record available.
Inventors
- 👤 Benzer Seymour
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:17
CPC Classifications
H; H10; H10P; H10P95/00; H10F; H10F99/00; H10P14/00; H10P14/40; H10P14/46; H10P14/47; Y; Y10; Y10S; Y10S148/00; Y10S148/064
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) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |