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			 The ornamental design for a diffusion evaporator for active substances, as shown. 
			  
			  
			  
			  
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FIG. 1 is a front, left side perspective view of the diffusion evaporator for active substances of the present invention;
FIG. 2 is a front view thereof;
FIG. 3 is a left side view thereof;
FIG. 4 is a bottom view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top view thereof; and,
FIG. 7 is a rear view thereof.
Caserta, Andrea, Ruiz Ballesteros, Julio Cesar, Garcia Fabrega, Ruben
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc | 
| Aug 17 2005 | Zobele Espana, S.A. | (assignment on the face of the patent) | / | |||
| Oct 21 2005 | BALLESTEROS, JULIO CESAR RUIZ | ZOBELE ESPANA, S A | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 017155 | /0709 | |
| Oct 21 2005 | FABREGA, RUBEN GARCIA | ZOBELE ESPANA, S A | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 017155 | /0709 | |
| Oct 21 2005 | CASERTA, ANDREA | ZOBELE ESPANA, S A | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 017155 | /0709 | 
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