US884501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for measuring the degree of exposure of a selenium-cell.
Assignee: Individual
•
Filing: 1906-08-01
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Granted: 1908-04-14
•
Expires: 1926-08-01
Abstract
No abstract record available.
Inventors
- 👤 Arthur Korn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:36
CPC Classifications
G; G01; G01J; G01J1/00; G01J1/42; G01J1/44; H; H03; H03M; H03M1/00
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) | 1911-04-14 | 1911-10-14 | 1912-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-04-14 | 1915-10-14 | 1916-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-04-14 | 1919-10-14 | 1920-04-14 | $7700.00 | Window Closed / Lapsed |