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History of the manufacturer  

Mack Laboratories; Chicago, IL

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Name: Mack Laboratories; Chicago, IL    (USA)  
Abbreviation: macklab
Products: Model types
Summary:

Mack Laboratories
716 Cass Street  (November, 1925 Radio Broadcast magazine page 174)
Chicago, Illinois

The company manufactured a tube rejuvenator in the mid 1920s.

(Note: The company used several different 700 series Cass Street addresses in their 1920s advertising.
Probably as a means to track which advertising was creating sales.) 

History:

This manufacturer was suggested by Alan Larsen.


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