Assignee
HAWERKAMP MANFRED
DE·7 granted patents·145 citations·filing 1981–1988
Top patents by PatentIndex Score
7 records- 0179US4466854AMethod and device for producing a helically wound tubeHAWERKAMP MANFRED·Filed 1982·Granted Aug 21, 1984·40 cites·9 claims
- 0273US4513605AMethod and device for testing welds of thermoplastic partsHAWERKAMP MANFRED·Filed 1983·Granted Apr 30, 1985·32 cites·1 claims
- 0367US5018555APre-press tubeHAWERKAMP MANFRED·Filed 1988·Granted May 28, 1991·28 cites·1 claims
- 0459US4678526AMethod and apparatus for forming drain pipesHAWERKAMP MANFRED·Filed 1985·Granted Jul 7, 1987·20 cites·2 claims
- 0555US4510004AApparatus and method for producing a tube from a continuous formed extruded supporting material and a profiled materialHAWERKAMP MANFRED·Filed 1982·Granted Apr 9, 1985·18 cites·3 claims
- 0635US4544435AHeatable winding drum construction for use in manufacturing plastic tubes and receptaclesHAWERKAMP MANFRED·Filed 1983·Granted Oct 1, 1985·5 cites·5 claims
- 0728US4420037ADevice for cooling and calibrating helical thermoplastic tube ribsHAWERKAMP MANFRED·Filed 1981·Granted Dec 13, 1983·2 cites·16 claims
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