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Patents Grants
last 30 patents
Information
Patent Grant
Device for emptying of hot particle material from a chamber into a...
Patent number
7,201,573
Issue date
Apr 10, 2007
Waterman AB
Jan Norrman
F28 - HEAT EXCHANGE IN GENERAL
Information
Patent Grant
Pen
Patent number
D254315
Issue date
Feb 26, 1980
Waterman S.A.
Alain Carre
D19 - Office supplies
Information
Patent Grant
Ball-point pen
Patent number
D253660
Issue date
Dec 11, 1979
Waterman S.A.
Alain Carre
D19 - Office supplies
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last 30 patents
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