Patent application 14006720 (US), filed 2014-04-15
Publication number: US20140227651A1
Title: ROLLER HEARTH FURNACE AND METHOD FOR HEATING WORKPIECES
CPC codes: F27B   9/30
C21D   9/0012
C21D   9/0056
F27B   9/047
F27B   9/2407
F27B   9/2469
F27B   9/3005
F27B  17/0016
F27B  17/0083
F27D   3/026
F27D   7/02
F27D  99/0073
F27D2007/023
Office action: rejection, dated 2015-10-19
Rejection reasons: obviousness_103
Prior art cited: ref_id: 7520746
ref_type: patent
severity: obviousness
ref_id: JP 2000109926
ref_type: patent
severity: obviousness
Final disposition: granted (2015-10-19)