''Geha'' entered the fountain pen market in [[1950]], with the production of economic pens made for the student market called [[Regent]], featuring a band with the company logo. The distinguishing feature of the ''Geha'' pens was the use of a [[piston filler]] equipped with a special ink reservoir (see patents {{Cite patent|GB|666830}} and {{Cite patent|DE|958812}}) that allowed an emergency reserve to be maintained, usable by pushing a pin located under the feeder. | ''Geha'' entered the fountain pen market in [[1950]], with the production of economic pens made for the student market called [[Regent]], featuring a band with the company logo. The distinguishing feature of the ''Geha'' pens was the use of a [[piston filler]] equipped with a special ink reservoir (see patents {{Cite patent|GB|666830}} and {{Cite patent|DE|958812}}) that allowed an emergency reserve to be maintained, usable by pushing a pin located under the feeder. |