Assignee
FRAENK ISOLIERROHR & METALL
2 granted patents·67 citations·filing 1975–1976
Top patents by PatentIndex Score
2 records- 0181US4021178AApparatus for making tubing from thermoplastic synthetic materialFRAENK ISOLIERROHR & METALL·Filed 1976·Granted May 3, 1977·39 cites·9 claims
- 0259US3994646AApparatus for producing double-walled tubes of plastic materialFRAENK ISOLIERROHR & METALL·Filed 1975·Granted Nov 30, 1976·28 cites·9 claims
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