B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
B62B7/00—Carriages for children; Perambulators, e.g. dolls' perambulators
B62B7/04—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor
B62B7/06—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable
A—HUMAN NECESSITIES
A45—HAND OR TRAVELLING ARTICLES
A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
A45C5/00—Rigid or semi-rigid luggage
A45C5/14—Rigid or semi-rigid luggage with built-in rolling means
A45C5/146—Rigid or semi-rigid luggage with built-in rolling means retractable