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Louis Jules Duboscq 
Patent illustration (Brevet d'Invention 13069) 
1852, 16 February 
  
Patent illustration 
French Patent and Trademark Office (INPI) 
 
LL/118380 
  
(Alan Griffiths, 14 February 2022) I'm indebted to Joris Nouwens for bringing this to my attention. (Alan Griffiths, 14 February 2022) I'm indebted to Joris Nouwens for bringing this to my attention. 
 

 
  
 
  
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