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A B Gemla Plast Patents
A B Gemla Plast
Gemla, SE
No. of patents:

Patent Number Title Of Patent Date Issued
4383477 Ventilator May 17, 1983
A ventilator is provided for the supply of untreated exterior air to a room. The ventilator has a valve seat (1), a valve body (2), means for connecting the ventilator to an exterior air duct (4) and operating means (6, 7) for resetting the position of the valve body. Stationary support

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