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History of the manufacturer  

Trimm; Libertyville and Chicago

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Name: Trimm; Libertyville and Chicago    (USA)  
Abbreviation: trimminc
Products: Model types Others

Trimm Inc.; Libertyville, Illinois (since 1947).
Also "Trimm Radio Mfg. Co.; Chicago" (~WWII).
Manufacturer of headsets, loudspeakers and hearing aids like the "Rex Headset".
Later in the 1950/60's they evolved in jack, patch cord, panels and related product categories.

Founded: 1922
In 2008 activ company see

This manufacturer was suggested by Wolfgang Scheida.

Some models:
Country Year Name 1st Tube Notes
USA  39 Rex Phones   Trimm Rex Headset, Version Code 30, 2000 ohms DC; Made of metal with bakelite earpads... 
USA  25 Home Speaker 25   Curved horn speaker with metal housing and papier-mâché (Volconite) bell. 
USA  25–39 Dependable Headset   Trimm Dependable; Headphones made of metal with black bakelite earpads. 2000 &Ome... 
USA  24 Home Speaker [small]   Curved horn speaker, metal base and neck, bakelite bell. 1600 ohms DC resistance. 
USA  60 Professional Headset 1000 Ohms   Trimm Professional Headset 1000 Ohms; Single earphone! 
USA  25 Entertainer Speaker   Trimm Entertainer Speaker. 
USA  25 Concert Speaker   Trimm Concert Speaker. 
USA  25 Cabinette Speaker   Trimm Cabinette Speaker. 
USA  25 Little Wonder Phonoadapter   Trimm Little Wonder Phonoadaptor. 
USA  25 Giant Unit Phonoadapter   Trimm Giant Unit Phonoadaptor. 
USA  25 Professional Headset   Trimm Professional Headset. 
USA  25 Chello Speaker   Trimm Chello Speaker. 


Further details for this manufacturer by the members (rmfiorg):

Radio Broadcast, Nov. 1925, p. 66tbn_usa_trimm.jpg
Scanned from the Radio Retailing June 1927 page 198.tbn_rr_june27_p198_ad_trimm.jpg