GB  1,055,842 <br/>
Improvements in and relating to sulphonates. 

 -  Jan. 18, 1967 
<br/><br/> EPO 12 
<br/><br/><label>Subjects--Local Terms: </label><br/>SULPHONATES <br/>SULPHONATION 
<br/><br/><label>Call Number: </label>GB 1,055,842