US595812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for converting x-rays into light for photographic purposes
Assignee: —
•
Filing: —
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Granted: 1897-12-21
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Expires: 1914-12-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:09
CPC Classifications
G; G21; G21K; G21K4/00; C; C09; C09K; C09K11/00; C09K11/08; C09K11/77; C09K11/7701
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) | 1900-12-21 | 1901-06-22 | 1901-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1904-12-21 | 1905-06-22 | 1905-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1908-12-21 | 1909-06-22 | 1909-12-22 | $7700.00 | Window Closed / Lapsed |