File:1931.04.06 Andrussow US 01934838 A1.pdf

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Original file (1,295 × 1,754 pixels, file size: 431 KB, MIME type: application/pdf, 4 pages)

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Summary

Description
English: US Patent 1,934,838 on the oxidation of ammonia and methane for production of hydrogen cyanide
Date
Source Freepatents online
Author Leonid Andrussow
Permission
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Public domain
This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code. Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

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6 April 1931

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current07:25, 19 July 2009Thumbnail for version as of 07:25, 19 July 20091,295 × 1,754, 4 pages (431 KB)wikimediacommons>Hermann Luyken{{Information |Description={{en|1=US Patent 1,934,838 on the oxidation of ammonia and methane for production of hydrogen cyanide}} |Source=Freepatents online |Author=Leonid Andrussow |Date= |Permission= |other_versions= }}

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