A multi-use pen-shaped medication dispensing device made of a plastic material that is recyclable after the contents of the medication cartridge have been exhausted. The device is made of a minimal number of parts, which include a housing, a dial assembly, a generally cylindrical button assembly located...http://www.google.com/patents/US5938642?utm_source=gb-gplus-sharePatent US5938642 - Multiple dose medication dispensing device
