| 摘要 |
<p>PREAMBLE TO DISCLOSURE BE IT KNOWN THAT CLAY D. SMITH and DOUGLAS V. KELLER, JR., citizens of the United States of America, of Deer Run Road, Lafayette, New York and 2724 Lafayette Road New York, United States of America respectively, having made an invention entitled MODIFICATION OF HYDROCARBONACEOUS MATERIALS the following disclosure contains a correct and full description of the invention and of the best mode known to the inventors of taking advantage of the same.</p> |
