Patent US2317265A successfully refreshed from Google Patents.
US2317265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorescent lamp
Assignee: Individual
•
Filing: 1940-07-26
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Granted: 1943-04-20
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Expires: 1960-07-26
Abstract
No abstract record available.
Inventors
- 👤 Foerste William
- 👤 Eugene A Quarrie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:54
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/30; C; C09; C09K; C09K11/00; C09K11/02; C09K11/025; Y; Y10; Y10S; Y10S315/00; Y10S315/05
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) | 1946-04-19 | 1946-10-19 | 1947-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-04-19 | 1950-10-19 | 1951-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-04-19 | 1954-10-19 | 1955-04-20 | $7700.00 | Window Closed / Lapsed |