59409 ⎘
Pens with ink reservoirs in holders, e.g. fountain-pens; Ink reservoirs flexible
Pen with multiple colors
#2Refill for a writing felt pen
#3Pressure difference compensation membrane
#4Compact system to mix and create color materials
#5Pressure difference compensation membrane
#6Angle-adjustable, gravity flow ink refill and pen
#7Fountain pen
#8Writing implement refill and writing implement
#9Fountain pen
#10Fountain pen
#11Ink Tube Structure
#12Combination hydrophobic/hydrophilic filters/reservoirs for controlling fluid flow