|
US2114550A
|
|
Luminous glass letter sign
|
|
US2079707A
|
|
Luminous sign and method of mounting the same
|
|
US2079714A
|
|
Illuminated sign
|
|
US2057908A
|
|
Luminous tube
|
|
US2065947A
|
|
Electrode for luminous tube and method of making the same
|
|
US1989401A
|
|
Illuminated sign
|
|
US1911793A
|
|
Electrode construction
|
|
US1928619A
|
|
Combination metal and electroluminescent tube display character
|
|
GB359965A
|
|
Improvements in or relating to positive column discharge tubes
|
|
US1915511A
|
|
Illuminated sign
|
|
US1900747A
|
|
Illuminated sign
|
|
US2041801A
|
|
Beacon
|
|
US1837387A
|
|
Display device
|
|
US1809878A
|
|
Protective shield for incandescent lamps
|
|
US1827292A
|
|
Electrode
|
|
US2020393A
|
|
Gas discharge tube
|
|
US1746024A
|
|
Electroluminescent tube beacon
|
|
US1942627A
|
|
Electrode for luminescent tubes
|
|
US1986462A
|
|
Electrode
|
|
US1974762A
|
|
Electrode construction for electroluminescent tubes
|
