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http://www.google.com/patents/US3224799?utm_source=gb-gplus-share
Patent US3224799 - THREADED TUBE JOINT HAVING A METAL-TO-METAL SEAL
THREADED TUBE JOINT HAVING A METAL-TO-METAL SEAL
Tubing Joint et al
Overview
Abstract
Drawings
Description
Claims
Patent number
: 3224799
Filing date
: Jun 21, 1965
Issue date
: Dec 21, 1965
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