US2525537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorescent lighting fixture
Assignee: SYIVANIA ELECTRIC PRODUCTS Inc
•
Filing: 1950-02-28
•
Granted: 1950-10-10
•
Expires: 1970-02-28
Abstract
No abstract record available.
Inventors
- 👤 Harlan B Fletcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:50
CPC Classifications
F; F21; F21V; F21V17/00; F21V17/10; F21V17/101
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1154576A
Cited
US1096548A
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US1221944A
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US1628406A
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US1557066A
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US1604516A
Cited
US2321099A
Cited
US2316404A
Cited
US2411952A
Cited
GB587744A
Cited
US2457023A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-09 | 1954-04-10 | 1954-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-09 | 1958-04-10 | 1958-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-09 | 1962-04-10 | 1962-10-10 | $7700.00 | Window Closed / Lapsed |