| 136 / | HD | BATTERIES: THERMOELECTRIC AND PHOTOELECTRIC | 
| 243 | DF | PHOTOELECTRIC {2} | 
| 244 |  | .~ Panel or array {5} | 
| 245 | DF | .~.~> Lightweight and collapsible or foldable | 
| 246 | DF | .~.~> With concentrator, orientator, reflector, or cooling means {2} | 
| 249 | DF | .~.~> Monolithic semiconductor | 
| 250 | DF | .~.~> Particulate or spherical semiconductor | 
| 251 | DF | .~.~> Encapsulated or with housing |