US2595520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Enclosed fluorescent lighting device
Assignee: Individual
•
Filing: 1947-03-26
•
Granted: 1952-05-06
•
Expires: 1967-03-26
Abstract
No abstract record available.
Inventors
- 👤 John J Guerin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:46
CPC Classifications
F; F21; F21V; F21V25/00; F21V25/12; B; B66; B66F; B66F7/00; B66F7/28; F21V17/00; F21V33/00; F21Y; F21Y2103/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1997687A
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US2323002A
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US2421967A
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US2400223A
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US2391325A
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US2407629A
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US2434781A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-06 | 1955-11-05 | 1956-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-06 | 1959-11-05 | 1960-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-06 | 1963-11-05 | 1964-05-06 | $7700.00 | Window Closed / Lapsed |