| Class: | 361 | ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES | 
  | Subclass: | 137 | SAFETY AND PROTECTION OF SYSTEMS AND DEVICES;  High voltage dissipation (e.g., lightning arrester);  Horn gap; | 
  | Class: | 313 | ELECTRIC LAMP AND DISCHARGE DEVICES | 
  | Subclass: | 243 | WITH SUPPORT AND/OR SPACING STRUCTURE FOR ELECTRODE AND/OR SHIELD;  For plural electrodes of discharge device; | 
  | Class: | 313 | ELECTRIC LAMP AND DISCHARGE DEVICES | 
  | Subclass: | 318.01 | WITH ENVELOPE;  Having base and connector; | 
  | Class: | 313 | ELECTRIC LAMP AND DISCHARGE DEVICES | 
  | Subclass: | 326 | ELECTRODE AND SHIELD STRUCTURES;  | 
  | Class: | 313 | ELECTRIC LAMP AND DISCHARGE DEVICES | 
  | Subclass: | 49 | WITH DETACHABLE ELECTRICAL CONNECTOR OR SUPPORT;  |