Patent application 14081702 (US), filed 2013-11-15
Publication number: US20140299382A1
Title: DRIVE SHAFT ASSEMBLY FOR A DOWNHOLE MOTOR
CPC codes: E21B   4/006
F16C   1/04
E21B   4/02
F16D   3/2052
Office action: rejection, dated 2015-10-15
Rejection reasons: anticipation_102
Prior art cited: ref_id: 8900062
ref_type: patent
severity: novelty_destroying
Final disposition: granted (2015-10-15)