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http://www.google.com.au/patents/US3473893?utm_source=gb-gplus-share
Patent US3473893 - PROCESS FOR PRODUCING NITRIC ACID
PROCESS FOR PRODUCING NITRIC ACID
Leslie C. Hardison et al
Overview
Abstract
Drawings
Description
Claims
Patent number
: 3473893
Filing date
: 27 Apr 1967
Issue date
: 21 Oct 1969
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