CPC Subgroup
A47B 23/06 characterised by association with auxiliary devices, e.g. line indicators, leaf turners, lampholders, (spot indicators, leaf turners, per se B42D9/00)
Full Title
Bed-tables; Trays; Reading-racks; Book-rests, > characterised by association with auxiliary devices, e.g. line indicators, leaf turners, lampholders, (spot indicators, leaf turners, per se B42D9/00)