Keyboard with invisible keys

Details Keyboard with invisible keys Keyboard with invisible keys

2010-02-01

2010-12-14

Nunn, Freda S (Department: 2916)

Recording, communication, or information retrieval equipment

Computer, data processor equipment

Peripheral equipment

CD14S455000

Design Patent

active

D0628998

CLAIM:
The ornamental design for a keyboard with invisible keys, as shown and described.

REFERENCES:
patent: D279474 (1985-07-01), Akagi et al.
patent: D320597 (1991-10-01), Lacount et al.
patent: D353369 (1994-12-01), Leibengood
patent: 5439304 (1995-08-01), Phillips et al.
patent: D440969 (2001-04-01), Tsai
patent: 6705787 (2004-03-01), Jeffries et al.
patent: D501478 (2005-02-01), Tzeng et al.
patent: D528117 (2006-09-01), Shimizu
patent: 7254012 (2007-08-01), Chou
patent: D569376 (2008-05-01), Shimizu
patent: D579450 (2008-10-01), Ozolins et al.
patent: D601568 (2009-10-01), Kujawski

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