An electronically controlled micro-dispensing apparatus (10) is described. The apparatus includes a container (12), an adaptor (18), a nozzle (28) and a control circuit (34 or 42). The container is filled with the chemical (104) and propellant (102). The adaptor, nozzle and control circuit are removable...http://www.google.com/patents/US6409093?utm_source=gb-gplus-sharePatent US6409093 - Automated electronically controlled microsprayer
