Vintage Lee De Forest Dynatherm HTE-300 Electro-Medical Apparatus

"Offered as a historical collectible; not intended for modern medical use". Item Vintage electro-medical device manufactured by Lee De Forest Laboratories, Los Angeles. Marked Dynatherm, Type HTE-300 on the original maker's plate. Early 20th-century high-frequency therapeutic apparatus using vacuum-tube technology. Items directly branded to Lee De Forest Laboratories are uncommon and rarely encountered on the open market.

This unit represents an early intersection of medical equipment and foundational electronic innovation. Features original De Forest-branded panel meters, large period control knobs, and substantial internal tube-based construction consistent with professional medical or institutional use of the era.

Condition Pre-owned antique electrical device. Not powered on or function tested.

Cosmetic wear is consistent with age and storage. Internal components, meters, tubes, and controls appear intact based on visual inspection. Power cord is not present. Notes Please review all photos carefully as they are part of the description.

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