Keyboards

Typewriting machines – Key-board or key lever-actuating mechanism – Key-cap or key-stem structure

Reexamination Certificate

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Details

C400S488000

Reexamination Certificate

active

07131781

ABSTRACT:
A keyboard. A keyboard subassembly is disposed on a base and moves between a first position and a second position. The keyboard subassembly provides a first angle of elevation when in the first position, and a second angle of elevation when in the second position. The first angle of elevation is less than the second angle of elevation.

REFERENCES:
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patent: 5163824 (1992-11-01), Kantner
patent: 5564844 (1996-10-01), Patterson et al.
patent: 5576929 (1996-11-01), Uchiyama et al.
patent: 5669722 (1997-09-01), Overthun et al.
patent: 5733056 (1998-03-01), Meagher
patent: 5754395 (1998-05-01), Hsu et al.
patent: 5951179 (1999-09-01), Zarek
patent: 6681926 (2004-01-01), DeVolpi
patent: 6762931 (2004-07-01), Chen
patent: 6839226 (2005-01-01), Chen
patent: 6984086 (2006-01-01), Rothman et al.

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