Working aid

Details Working aid Working aid

2006-02-28

2006-02-28

Rademaker, Charles A. (Department: 2915)

Design Patent

active

D0515839

CLAIM:
The ornamental design of a working aid, as shown and described.

REFERENCES:
patent: 5081936 (1992-01-01), Drieling
patent: D324791 (1992-03-01), Hoover
patent: D349731 (1994-08-01), Leveen et al.
patent: D382727 (1997-08-01), Kresge et al.
patent: 6041715 (2000-03-01), Jarke et al.
patent: D442795 (2001-05-01), Holt
patent: D472728 (2003-04-01), Harris et al.
patent: D499575 (2004-12-01), Chan

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