Patent application 13599515 (US), filed 2012-08-30
Publication number: US20130055524A1
Title: CLEANING DEVICE FOR CLEANING ARTIFICIAL FLOOR AREAS PROVIDED WITH FLOOR COVERING PARTICLES, ESPECIALLY FOR ARTIFICIAL TURF
CPC codes: E01H   1/0845
A47L  11/4027
Office action: rejection, dated 2015-10-16
Rejection reasons: obviousness_103
indefiniteness_112
Prior art cited: ref_id: 4457043
ref_type: patent
severity: obviousness
ref_id: 3521436
ref_type: patent
severity: obviousness
ref_id: 02008060145
ref_type: patent
severity: obviousness
Final disposition: granted (2015-10-16)