Patent application 13699352 (US), filed 2013-03-12
Publication number: US20130214928A1
Title: ROCK DRILLING RIG, METHOD FOR TRANSFER DRIVE OF THE SAME, AND SPEED CONTROLLER
CPC codes: B60L  15/20
Y10T  74/20396
Y02P  90/60
B60L2200/40
B60L2240/36
B60L2260/16
B60W  30/18
B60W  50/14
B60Y2200/41
B60Y2200/91
B60Y2300/67
E21B   7/025
Y02T  10/72
Office action: rejection, dated 2015-10-15
Rejection reasons: obviousness_103
Prior art cited: ref_id: 4423362
ref_type: patent
severity: obviousness
ref_id: 20030231966
ref_type: patent
severity: obviousness
ref_id: 20050187693
ref_type: patent
severity: obviousness
ref_id: 20020190173
ref_type: patent
severity: obviousness
ref_id: 20020129355
ref_type: patent
severity: obviousness
ref_id: 20100147084
ref_type: patent
severity: obviousness
ref_id: 20090174573
ref_type: patent
severity: obviousness
Final disposition: rejected (2015-10-15)