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http://www.google.co.uk/patents/US3171218?utm_source=gb-gplus-share
Patent US3171218 - DETACHABLE HEELS
DETACHABLE HEELS
Sarmiento St. et al
Overview
Abstract
Drawings
Description
Claims
Patent number
: 3171218
Filing date
: 28 Nov 1962
Issue date
: 2 Mar 1965
Plain text
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