Content-type: text/application/x-research-info-systems Provider: Palgrave Macmillan Content: application/x-research-info-systems TY - JOUR AU - Burdon, Michael AU - Sloper, Kristie TI - The art of using secondary patents to improve protection JA - J Med Market PY - 2003/06/01/print VL - 3 IS - 3 SP - 226 EP - 238 SN - 1745-7904 UR - http://dx.doi.org/10.1057/palgrave.jmm.5040125 ER -