US  2,718,502 <br/>
Lubricant compositions. 

 -  Sep. 20, 1955 
<br/><br/> cl.252/1 
<br/><br/><label>Subjects--Topical Terms: </label><br/>LUBRICATING OIL--PATENTS.<br/>LECITHIN--PATENTS.
<br/><br/><label>Call Number: </label>US 2,718,502