Numéro du brevet: 3576928 Date de dépôt: 18 oct. 1967 Date de délivrance: 27 avr. 1971
PRODUCTION OP SHAPED ARTICLES Filed Oct. 18, 1967 - 5 Sheets-Sheet I
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PRODUCTION OF SHAPED ARTICLES Filed Oct. 18. 1967 . 5 Sheets-Sheet 4