Patent application 13984661 (US), filed 2013-08-09
Publication number: US20130320603A1
Title: PISTON FOR AN AIR SPRING
CPC codes: F16F   9/057
B60G  11/27
B60G  11/28
B60G  17/0521
B60G2202/152
B60G2206/424
B60G2500/20
Office action: rejection, dated 2015-10-16
Rejection reasons: obviousness_103
Prior art cited: ref_id: 6431529
ref_type: patent
severity: obviousness
ref_id: German publication 19645228
ref_type: patent
severity: obviousness
ref_id: 2926011
ref_type: patent
severity: obviousness
ref_id: 3043582
ref_type: patent
severity: obviousness
Final disposition: rejected (2015-10-16)