Modifiche

nessun oggetto della modifica
Riga 2: Riga 2:  
|Inventor=William I. Ferris, Edwin F. Britten
 
|Inventor=William I. Ferris, Edwin F. Britten
 
|Assignee=L. E. Waterman Company
 
|Assignee=L. E. Waterman Company
|Country=US
+
|Country=GB
 
|ApplicationNum=191505790
 
|ApplicationNum=191505790
 
|ApplicationDate=1915-04-17
 
|ApplicationDate=1915-04-17