Step stool

Details Step stool Step stool

2006-07-04

2006-07-04

Snapp, Sandra S. (Department: 2915)

Design Patent

active

D0524069

CLAIM:
The ornamental design for the step stool, as shown and described.

REFERENCES:
patent: D184390 (1959-02-01), Cramer
patent: D197842 (1964-03-01), Keller
patent: D216508 (1970-01-01), Dottinger
patent: 3559761 (1971-02-01), Wehner
patent: 3599750 (1971-08-01), Serwer
patent: 3721315 (1973-03-01), Wehner
patent: D237872 (1975-12-01), Miller
patent: D244494 (1977-05-01), Dottinger
patent: D262419 (1981-12-01), Cramer
patent: D337211 (1993-07-01), Bergkvist
patent: D359863 (1995-07-01), Marlor

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