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US3352621A
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Ball point writing instrument
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DE1461613A1
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pen
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GB1078681A
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Improvements in and relating to ball point writing instruments
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ES288651A1
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Method of production of a written extreme for a ballpoint (Machine-translation by Google Translate, not legally binding)
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US3234772A
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Method for forming nib housings and other small articles
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US3234771A
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Method for forming small articles
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GB1004992A
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Improvements in and relating to the nibs of ball point writing instruments andtheir manufacture
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GB1004991A
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Improvements in and relating to the nibs of ball point writing instruments and theirmanufacture
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US3145286A
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Method and apparatus for preparing cratered balls
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ES271600A3
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Improvements in writing instruments (Machine-translation by Google Translate, not legally binding)
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DE1243051B
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Container for dispensing liquid for writing and other distribution devices
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US3106190A
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Reservoir for writing or dispensing instruments
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US3140695A
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Reservoir seal for writing instrument
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GB944600A
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Improvements in and relating to reservoirs of writing and other dispensing instruments
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GB955260A
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Improvements in and relating to reservoirs of writing and other dispensing instruments
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GB978802A
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Improvements in and relating to reservoirs of writing and other dispensing instruments
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GB973563A
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Improvements in and relating to the nibs of ball point writing instruments and theirmanufacture
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GB978801A
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Improvements in and relating to ball point writing instruments
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GB964886A
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Improvements in and relating to nibs of ball point pens
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GB935646A
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Improvements in ball-tip writing instruments and balls therefor
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