Patents on the manufacture of sponge rubber and on heatsensitized latex /

Patents on the manufacture of sponge rubber and on heatsensitized latex / Bearb.: Ir. M. van den Tempel - 69, 9, 12 S. - Rubber Stichting : Communication 89. 891.b . - Mededeelingen van de rubber-stichting = Mitteilungen der Kautschuk-Stiftung = Communications of the rubber foundation 89.89a.b .

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Patentsammlung
Kautschuk
Schaumstoff