Patent US2306567A successfully refreshed from Google Patents.
US2306567A
Expired / Lapsed
US
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Fluorescent material and its manufacture
Assignee: General Electric Co
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Filing: 1941-09-02
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Granted: 1942-12-29
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Expires: 1961-09-02
Abstract
No abstract record available.
Inventors
- 👤 Willard A Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:02
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/77; C09K11/7715; C09K11/7723; C09K11/7724
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) | 1945-12-28 | 1946-06-29 | 1946-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-12-28 | 1950-06-29 | 1950-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-12-28 | 1954-06-29 | 1954-12-29 | $7700.00 | Window Closed / Lapsed |