A novel comb which comprises a comb back, a comb-teeth module detachably mounted on the comb back, and a case member connected to one end of the comb back for serving as a handle. The comb-teeth module comprises a continuous wire wound helically into a plurality of coils in juxtaposition with each coil...http://www.google.es/patents/US3978870?utm_source=gb-gplus-sharePatente US3978870 - Comb with disposable comb-teeth module
