Ball-point pen

Office supplies; artists and teachers materials – Equipment for writing – drawing – or for fine arts – Marking instrument

Patent

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Details

D19 56, D1906

Patent

active

D02536609

REFERENCES:
patent: D83671 (1931-03-01), Esterow
patent: D162213 (1951-02-01), Nelson et al.
patent: D174486 (1955-04-01), Beckstrom

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