U.S. Design Patent 162,318 (USD162318S)

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Provided by the ASK Keyboard Patents database

A patent drawing of IBM's Proof machine from a front-left perspective.

Applied 9th May 1950

Published 6th March 1951

Expired ~1965

Google Patents

Name	Proof machine
Inventors	George H. Kress
Assignees	IBM
Description	An ornamental design depicting an IBM 802 or 803 Proof Machine.

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