Patent US3275822A successfully refreshed from Google Patents.
US3275822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorescent luminaire
Assignee: Emerson Electric Co
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Filing: 1964-02-19
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Granted: 1966-09-27
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Expires: 1984-02-19
Abstract
No abstract record available.
Inventors
- 👤 Vearl S Wince
- 👤 Carl X Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:43
CPC Classifications
F; F21; F21V; F21V3/00; F21S; F21S8/00; F21S8/04; F21S8/06; F21V17/00; F21V17/10; F21V17/14; F21V21/00; F21V21/005; F21V23/00; F21V23/001; F21V23/02; F21V23/026; F21V5/00; F21V5/02; F21V7/00; F21V7/0008; F21V7/0016; F21V7/0091; F21Y; F21Y2103/00; F21Y2113/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
137 words
A LUMINAIRE, COMPRISING A CHASSIS, A REFRACTOR CONNECTED TO SAID CHASSIS, LINEAR FLUORESCENT LAMP MEANS CONNECTED TO SAID CHASSIS FOR PROVIDING A SOURCE OF LIGHT, SAID REFRACTOR INCLUDING A BOTTOM SECTION, TWO PARALLEL SPACED SIDE SECTIONS EXTENDING THE LENGTH OF SAID BOTTOM SECTION AND CONNECTED THERETO, A LEDGE INTEGRALLY CONNECTED TO THE TOP OF EACH SIDE SECTION AND EXTENDING INWARDLY, SUBSTANTIALLY PARALLEL TO SAID BOTTOM SECTION, LINEAR PRISM MEANS ON THE OUTER FACE OF SAID LEDGE FOR DIRECTING LIGHT TRANSMITTED THERETHROUGH ABOVE THE LUMINAIRE, SAID BOTTOM SECTION INCLUDING A PLURALITY OF LIGHT CUT-OFF MEANS FOR SECURING OUT LIGHT EMITTED BY SAID LAMP MEANS FOR A PREDETERMINED GLARE ZONE, SAID SIDE SECTION INCLUDING HORIZONTALLY EXTENDING PRISM MEANS ON THE INNER FACE OF EACH SIDE SECTION FOR DIRECTING LIGHT EMITTED BY SAID LAMP MEANS IN DIRECTION OUTSIDE OF A
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |