Vented pen cap

Details Vented pen cap Vented pen cap

1996-06-11

1997-09-23

Thompson, Martie

Office supplies; artists and teachers materials

Equipment for writing, drawing, or for fine arts

Element or attachment

D19 56, D19 53, D19 51, 1906

Patent

active

D03841057

REFERENCES:
patent: D146181 (1947-01-01), Lippincott
patent: D171093 (1953-12-01), Lovejoy
patent: D198419 (1964-06-01), Hankins
patent: D217647 (1970-05-01), De Groft et al.
patent: D239280 (1976-03-01), Taylor et al.
patent: D312096 (1990-11-01), Vitrac
patent: D317324 (1991-06-01), Chuang
patent: D330911 (1992-11-01), Tu
patent: D341623 (1993-11-01), Chuang
patent: D349297 (1994-08-01), Shimizu
patent: D351417 (1994-10-01), Oka
patent: D357699 (1995-04-01), Takanashi
patent: D359759 (1995-06-01), Otake
patent: D366497 (1996-01-01), Otake
patent: D366902 (1996-02-01), Takahashi
patent: 4376590 (1983-03-01), Kuo
patent: 5221152 (1993-06-01), Chuang
Miller Office Products .COPYRGT.1994, see p. 763 circled pencil cap on item E, page center-desk copy.

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