Patent US3226590A successfully refreshed from Google Patents.
US3226590A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorescent panel lamp
Assignee: General Electric Co
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Filing: 1960-11-15
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Granted: 1965-12-28
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Expires: 1980-11-15
Abstract
No abstract record available.
Inventors
- 👤 Richard S Christy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:05
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/24; H01J9/26; H01J9/261; H01J61/00; H01J61/02; H01J61/04; H01J61/10; H01J61/103; H01J61/38; H01J61/42; H01J61/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A FLUORESCENT PANEL LAMP COMPRISING A VITREOUS ENVELOPE FORMED BY A BACKPLATE AND A FACEPLATE SEALED TOGETHER ALONG THEIR MARGINS, SAID BACKPLATE BEING FORMED WITH A LABRYRINTHINE GROOVE OF SUBSTANTIALLY CONSTANT WIDTH EXTENDING CONTINUOUSLY THROUGHOUT ITS AREA TO PROVIDE A DISCHARGE CHANNEL, ELECTRODES SEALED INTO SAID LAMP AT THE ENDS OF SAID CHANNEL AND AN IONIZABLE MEDIUM THEREIN, A PHOSPHOR COATING ON SAID FACEPLATE, SAID FACEPLATE HAVING RELATIVELY SHALLOW OUTWARDLY CONVEX EMBOSSMENTS FORMED THEREIN THROUGHOUT ITS AREA, SAID EMBOSSMENTS BEING OF SUBSTANTIALLY THE SAME WIDTH AS THE DISCHARGE CHANNEL FORMED BY SAID GROOVE AND BEING DISPOSED TO OVERLIE THE DISCHARGE CHANNEL, SAID EMBOSSMENTS HAVING A RATIO OF DEPTH OF PROJECTION TO WIDTH IN THE RANGE OF 1:4 TO 1:10 AND BEING OF A LENGTH PROVIDING AN ORDERLY ARRANGEMENT WHEREBY TO ACHIEVE A FACEPLATE OF IMPROVED STRENGTH AND ATTRACTIVE APPEARANCE EFFECTIVELY CAMOUFLAGING THE BRIGHT PATH OF THE DISCHARGE IN SAID CHANNEL.
Claim 2
Dependent Claim
150 words
A FLUORESCENT PANEL LAMP COMPRISING A VITREOUS ENVELOPE FORMED BY A BACKPLATE AND A FACEPLATE SEALED TOGETHER ALONG THEIR MARGINS, SAID BACKPLATE BEING FORMED WITH A LABRYRINTHINE GROOVE OF SUBSTANTIALLY CONSTANT WIDTH EXTENDING CONTINUOUSLY THROUGHOUT ITS AREA TO PROVIDE A DISCHARGE CHANNEL, ELECTRODES SEALED INTO SAID LAMP AT THE ENDS OF SAID CHANNEL AND AN IONIZABLE MEDIUM THEREIN, A PHOSPHOR COATING ON SAID FACEPLATE, SAID FACEPLATE HAVING RELATIVELY SHALLOW OUTWARDLY CONVEX EMBOSSMENTS FORMED THEREIN THROUGHOUT ITS AREA, SAID EMBOSSMENTS BEING OF SUBSTANTIALLY THE SAME WIDTH AS THE DISCHARGE CHANNEL FORMED BY SAID GROOVE AND BEING DISPOSED TO OVERLIE THE DISCHARGE CHANNEL, SAID EMBOSSMENTS HAVING A RATIO OF DEPTH OF PROJECTION TO WIDTH IN THE RANGE OF 1:4 TO 1:10 AND BEING OF A LENGTH PROVIDING AN ORDERLY ARRANGEMENT WHEREBY TO ACHIEVE A FACEPLATE OF IMPROVED STRENGTH AND ATTRACTIVE APPEARANCE EFFECTIVELY CAMOUFLAGING THE BRIGHT PATH OF THE DISCHARGE IN SAID CHANNEL.
References Cited (Backward Citations)
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Cited
US2255431A
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US2643020A
Cited
US2555749A
Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |