Patent application 13218915 (US), filed 2011-08-26
Publication number: US20120048543A1
Title: Method and Apparatus for Removing Liquid from a Gas Producing Well
CPC codes: E21B  43/34
E21B  43/13
E21B  43/006
E21B  43/127
F04B  47/02
Office action: rejection, dated 2015-10-16
Rejection reasons: obviousness_103
Prior art cited: ref_id: 4699719
ref_type: patent
severity: obviousness
ref_id: 4512149
ref_type: patent
severity: obviousness
ref_id: 20060151167
ref_type: patent
severity: obviousness
ref_id: 5507858
ref_type: patent
severity: obviousness
ref_id: 6175210
ref_type: patent
severity: obviousness
ref_id: 20110268586
ref_type: patent
severity: obviousness
ref_id: 2973065
ref_type: patent
severity: obviousness
ref_id: 3971719
ref_type: patent
severity: obviousness
ref_id: 2316494
ref_type: patent
severity: obviousness
ref_id: 4099447
ref_type: patent
severity: obviousness
ref_id: 2169815
ref_type: patent
severity: obviousness
Final disposition: granted (2015-10-16)