Writing implement

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

Patent

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Details

D19 43, D19 56, D19 57

Patent

active

D03691845

REFERENCES:
patent: D139903 (1945-01-01), Baff
patent: D146176 (1947-01-01), Green et al.
patent: D236977 (1975-09-01), Hocq
patent: D295537 (1988-03-01), Davidson et al.
patent: D324879 (1992-03-01), Morgan
patent: D329253 (1992-09-01), Sekiguchi
patent: D331070 (1992-11-01), Hu Huang
patent: D355933 (1995-02-01), Collins

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