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Hef Technische Entwicklung GmbH & Co. KG
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Dusseldorf, DE
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Patents Grants
last 30 patents
Information
Patent Grant
Device for sealing a wing of a window, a door or the like in relati...
Patent number
4,372,084
Issue date
Feb 8, 1983
Hef Technische Entwicklung GmbH & Co. KG
Bernhard Janke
E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
Information
Patent Grant
Arrangement for connecting two profile members, particularly channe...
Patent number
4,338,753
Issue date
Jul 13, 1982
Hef Technische Entwicklung GmbH & Co. KG
Bernhard Janke
E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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