Viewing aid

Details Viewing aid Viewing aid

2003-09-06

2004-11-23

Greene, Paula A. (Department: 2912)

Photography and optical equipment

Optical article not elsewhere specified

Lens or objective

CD16S130000

Design Patent

active

D0498779

CLAIM:
The ornamental design for a viewing aid, as shown and described.

REFERENCES:
patent: 2510344 (1950-06-01), Law
patent: D243394 (1977-02-01), Nerad et al.
patent: 4871233 (1989-10-01), Sheiman
patent: 4949978 (1990-08-01), Berner
patent: 5982565 (1999-11-01), Nomura et al.
patent: D440998 (2001-04-01), Andrews
patent: D441383 (2001-05-01), Andrews

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