Candoluminescent material and its preparation process
Candoluminescent material, its preparation process and its...
Gas mantle technology
Gas mantle technology
Improved simulated solid fuel element
Incandescent mantles for lighting and heating appliances
Inverted incandescent burner
Lamp mantle
Method of manufacturing incandescent mantles
Method of strengthening the ash skeleton of incandescent...
Process for treating lamp wicks
Process of forming a mantle-support tube subassembly
Yttrium oxide mantles for fuel-burning lanterns