Inventor

ANDERKA GEROLD

DE25 patents

⚠️ This page may combine multiple inventors who share the name “ANDERKA GEROLD”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

ANDERKA GEROLD

KOH I NOOR RAPIDOGRAPH

Felt tip writing pen

Stylographic pen

Drawing pen exchanger for computer controlled drawing machines

Tubular writting pen with superposed pressure equalization chambers

Writing apparatus

Combined drafting pen holder and container

Device for cleaning ink pen points

Drawing method and drawing instrument

Method for regulating ink flow in drafting pens

Ink cartridge with rupturable sealing element

Capillary tube pen point

Protective screw cap for the writing point of a tube writing pen

Process for the production of lettering or symbol templates

Automatic drafting apparatus

Device for covering an oblong opening in a housing

Device for exchanging objects in particular writing instruments

Rupturable sealing element within an ink reservoir cartridge

ROTRING WERKE RIEPE KG

Sign cutting device

Writing instrument with separable compensating means

ANDERKA GEROLD

Spacers for use as string protectors for tennis, squach and badminton rackets, and device for inserting these parts

Circular spacer inserter for stringed rackets

MESNE KOH I NOOR RAPIDOGRAPH I

Blocking assembly for an automatic drafting device

Writing fluid cartridge

(unassigned)

Handwriting or ink applying device

ROTRING INT GMBH

Vector brush