Writing instrument

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

Patent

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Details

D19 49, D19 51, D19 56, D19 57

Patent

active

D03581675

REFERENCES:
patent: D98522 (1936-02-01), Juelss
patent: D137496 (1944-03-01), Lustig
patent: D254315 (1980-02-01), Carre
patent: D279115 (1985-06-01), Nishida
patent: D316726 (1991-05-01), Itoh
patent: D327707 (1992-07-01), Ratami
patent: D339607 (1993-09-01), White et al.
patent: 5073056 (1991-12-01), Belmando

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