Stair step display

Details Stair step display Stair step display

2007-12-25

2007-12-25

Seeger, Janice E. (Department: 2913)

Design Patent

active

29195659

CLAIM:
The ornamental design for a stair step display, as shown.

REFERENCES:
patent: D23906 (1894-12-01), Symonds
patent: D160378 (1950-10-01), Falkenberg et al.
patent: D189824 (1961-02-01), Harper
patent: D273919 (1984-05-01), Pasinski
patent: D308776 (1990-06-01), Yau Kee
patent: D351072 (1994-10-01), Emalfarb et al.
patent: D355087 (1995-02-01), Billingsley
patent: D440793 (2001-04-01), Iannaccone
patent: D471033 (2003-03-01), Yamaguchi
patent: 6820949 (2004-11-01), Caruso
patent: D538058 (2007-03-01), Van Es

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