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Class Information
Number: 315/52
Name: Electric lamp and discharge devices: systems > Combined load device or load device temperature modifying means and electrical circuit device structure > Plural circuit elements > Plural impedance elements
Description: Subject matter, having a plurality of impedance elements structurally combined with the load device structure.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6288491 |
Metal halide lamp |
Sep. 11, 2001 |
| 6118222 |
Circuit for complementing an AC mains voltage, particularly for resistive loads |
Sep. 12, 2000 |
| 5331250 |
Thick film resistor for use in a vacuum and a high pressure discharge lamp having such a resistor |
Jul. 19, 1994 |
| 5327046 |
High pressure discharge lamp having overcurrent fuse protection |
Jul. 5, 1994 |
| 5159242 |
High pressure discharge lamp having an integral thick film resistor with multiple resistive elements |
Oct. 27, 1992 |
| 5017833 |
Pilot light assembly |
May. 21, 1991 |
| 4988921 |
Lamp with integral automatic light control circuit |
Jan. 29, 1991 |
| 4792726 |
Fluorescent lamp unit with integral ballast housing |
Dec. 20, 1988 |
| 4786842 |
Resistor assembly |
Nov. 22, 1988 |
| 4550275 |
High efficiency pulse ultraviolet light source |
Oct. 29, 1985 |
| 4547704 |
Higher efficiency incandescent lighting units |
Oct. 15, 1985 |
| 4383204 |
Three-level interface control circuit for electronically ballasted lamp |
May. 10, 1983 |
| 4316121 |
Integrally ballasted fluorescent lamp unit |
Feb. 16, 1982 |
| 4234818 |
Electric mixed light lamp |
Nov. 18, 1980 |
| 4210838 |
Gas discharge display panel |
Jul. 1, 1980 |
| 4115722 |
Corona-shield for an image-tube photocathode |
Sep. 19, 1978 |
| 4020388 |
Discharge device |
Apr. 26, 1977 |
| 3953808 |
Solid state amplifier |
Apr. 27, 1976 |
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