Patent application 13790924 (US), filed 2013-03-08
Publication number: US20140252684A1
Title: ADDITIVE MANUFACTURING METHOD FOR PRINTING THREE-DIMENSIONAL PARTS WITH PURGE TOWERS
CPC codes: B29C  64/35
B33Y  10/00
B33Y  50/02
B29C  64/357
B29C  64/118
B29C  64/165
Office action: rejection, dated 2015-10-13
Rejection reasons: obviousness_103
Prior art cited: ref_id: 8033811
ref_type: patent
severity: obviousness
Final disposition: granted (2015-10-13)