US1728073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selenium cell
Assignee: Individual
•
Filing: 1928-06-06
•
Granted: 1929-09-10
•
Expires: 1948-06-06
Abstract
No abstract record available.
Inventors
- 👤 Neale John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:22
CPC Classifications
H; H10; H10F; H10F10/00; H10F10/10; H10F30/00; Y; Y02; Y02E; Y02E10/00; Y02E10/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1932-09-09 | 1933-03-11 | 1933-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-09-09 | 1937-03-11 | 1937-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-09-09 | 1941-03-11 | 1941-09-10 | $7700.00 | Window Closed / Lapsed |