Patent US2834873A successfully refreshed from Google Patents.
US2834873A
Expired / Lapsed
US
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Fluorescent lighting fixture
Assignee: SIMON GROSS
•
Filing: 1957-01-16
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Granted: 1958-05-13
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Expires: 1977-01-16
Abstract
No abstract record available.
Inventors
- 👤 John R Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:43
CPC Classifications
F; F21; F21S; F21S8/00; F21S8/08; F21S8/085; F21S8/088; F21V; F21V23/00; F21V23/06; F21V33/00; F21Y; F21Y2103/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1666644A
Cited
US1977105A
Cited
US2227739A
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US2489686A
Cited
US2597060A
Cited
US2718587A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-12 | 1961-11-11 | 1962-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-12 | 1965-11-11 | 1966-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-12 | 1969-11-11 | 1970-05-13 | $7700.00 | Window Closed / Lapsed |