An accessory device for a telephone system, the device including a spoken telephone number recorder serving a local communicant, the recorder including a spoken telephone number recognizer operative to recognize a telephone number spoken in the course of a telephone conversation between a remote communicant...http://www.google.com/patents/US5651056?utm_source=gb-gplus-sharePatent US5651056 - Apparatus and methods for conveying telephone numbers and other information via communication devices
