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www.google.comhttp://www.google.com/patents/US2621889?utm_source=gb-gplus-sharePatent US2621889 - EXPANSIBLF SLEEVE TYPE VALVE

Patent US2621889 - EXPANSIBLF SLEEVE TYPE VALVE

EXPANSIBLF SLEEVE TYPE VALVE

Douglas H. Annin et al

Abstract

Overview
Abstract
Drawings
Description
Claims

Patent number: 2621889
Filing date: May 25, 1947
Issue date: Dec 16, 1952

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