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PatentBrief

Inventor

Ichiro Shirai

Patents indexed

1

Year range

1987

Associated with

Years active

1987

Total patents

1

Most recent

1987

Domains

consumer_electronicsmechanicalgaming

Activity by decade

1980s
1

Patents

1

Career timeline

1 patents, in 1987

Dot size = forward citations

19871988

Hover or tap any dot to see the patent. Larger dots indicate more forward citations — a proxy for downstream influence.

US 4687200·1987·Nintendo Co Ltd

How the Nintendo D-Pad Works

A mechanical switch design that allows a user to control directional movement in video games using a single, tilting thumb-operated button.

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