Automatic indicators of low pressure in vehicle tires; Chronographs for use as specialized time recording apparatuses; Clickers for training dogs; Dog whistles; Electric bark control dog collars featuring citronella spray, static electricity; Electromechanical devices for preventing squirrels and other animals from accessing bird seed in feeders; Electronic animal confinement system; Electronic animal confinement unit comprising transmitters, electrical transformers, wires, and receiver colla...