136 / | HD | BATTERIES: THERMOELECTRIC AND PHOTOELECTRIC |
243 | DF | PHOTOELECTRIC {2} |
244 | DF | .~ Panel or array {5} |
246 | .~.~ With concentrator, orientator, reflector, or cooling means {2} | |
247 | DF | .~.~.~> Fluorescent concentrator |
248 | DF | .~.~.~> Hybrid conversion system |