Pen

Details Pen Pen

1988-10-18

1991-07-23

Dunkins, Bruce W.

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Marking instrument

D19 41

Patent

active

D03184900

REFERENCES:
patent: D198418 (1964-06-01), Fehling et al.
patent: D208680 (1967-09-01), Summers
patent: D210858 (1968-04-01), Zierhut
patent: D229877 (1974-01-01), Ament
patent: D249696 (1978-09-01), Henkels
patent: D273144 (1984-03-01), Jankewitz
patent: D285730 (1986-09-01), Bulwick
patent: D297020 (1988-08-01), Grossiord
patent: D313246 (1990-12-01), Porsche
patent: 1040860 (1912-10-01), Blaker
patent: 1083027 (1913-12-01), Pancke
patent: 1134691 (1915-04-01), Martin et al.
patent: 1151167 (1924-10-01), Jesnig
patent: 2027857 (1985-06-01), Buehner
patent: D2833334 (1986-04-01), Seigt
patent: 4236841 (1980-12-01), Jongeward

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