US2615123A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceiling fixture for fluorescent lamps
Assignee: Individual
•
Filing: 1947-10-25
•
Granted: 1952-10-21
•
Expires: 1967-10-25
Abstract
No abstract record available.
Inventors
- 👤 Edwin F Guth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:29
CPC Classifications
F; F21; F21V; F21V21/00; F21V21/36; F21V21/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2268731A
Cited
US2336599A
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US2299276A
Cited
US2319572A
Cited
US2365614A
Cited
US2431656A
Cited
GB585320A
Cited
US2564328A
Cited
US2439885A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-21 | 1956-04-21 | 1956-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-21 | 1960-04-21 | 1960-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-21 | 1964-04-21 | 1964-10-21 | $7700.00 | Window Closed / Lapsed |