![US Patent 1,934,838 on the oxidation of ammonia and methane for production of hydrogen cyanide](http://upload.wikimedia.org/wikipedia/commons/thumb/5/58/1931.04.06_Andrussow_US_01934838_A1.pdf/page1-442px-1931.04.06_Andrussow_US_01934838_A1.pdf.jpg)
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current | 06:25, 19 July 2009 | ![]() | 1,295 × 1,754, 4 pages (431 KB) | 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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