Content-type: text/application/x-research-info-systems Provider: Palgrave Macmillan Content: application/x-research-info-systems TY - JOUR AU - Hutchins, Mike TI - Using interlocking additional early stage patents to improve and extend patent protection JA - J Med Market PY - 2003/06/01/print VL - 3 IS - 3 SP - 212 EP - 215 SN - 1745-7904 UR - http://dx.doi.org/10.1057/palgrave.jmm.5040122 ER -