In USA and Japan on Dr. Hell registered patents

 
 
For patent research we have used the website of German and European
Patent office.

 

 
The patents are freely accessible and may therefore be reproduced;
but without modification.
Please also note the usage regulations of the patent offices.

 

 

This list includes patents registered in USA and Japan on Dr. Hell
as co-inventor
             

 

  Patente Abstracts   Verschluesselungs Patente
 
Patents
Abstract
German
 
Encryption
Patents
German

 

  

Publication-number   Time period of pubication
     
US000002113429A to US000002993087A   1938  to  1961
US000003034105A to US000003710019A   1962  to  1973
     
JPH062427B2   1994