Covered card file

Details Covered card file Covered card file

1987-04-23

1990-06-19

Dunkins, Bruce W.

Office supplies; artists and teachers materials

Office equipment not elsewhere specified

Holder or file

D19 75, D19 90

Patent

active

D03087000

REFERENCES:
patent: D243526 (1977-03-01), Overman
patent: D267911 (1983-02-01), Long et al.
patent: D280477 (1983-09-01), Petrick
patent: D283948 (1986-05-01), Clouser et al.
patent: D285214 (1986-08-01), Roskvist
patent: D285216 (1986-08-01), Roskvist
patent: D287070 (1986-12-01), Staubitz et al.

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