Karl E. Sewalt

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Schiedam, NL

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Patents Grantslast 30 patents

Information Patent Grant
Sealing plug for sealing hollow flotation elements for use in a cov...
- Patent number 7,594,590
- Issue date Sep 29, 2009
- Deceuninck NV
- Kees R. Kooijmans
- E04 - BUILDING
Information Patent Grant
Flotation device
- Patent number D583005
- Issue date Dec 16, 2008
- Deceuninck N.V.
- Wim Grymonprez
- D21 - Games, toys, and sports goods

Patents Applicationslast 30 patents

Information Patent Application
PHOTOVOLTAIC BUILDING ELEMENT
- Publication number 20210367088
- Publication date Nov 25, 2021
- NEDERLANDSE ORGANISATIE VOOR TOEGEPAST- NATUURWETENSCHAPPELIJK ONDERZOEK TNO
- Stan Anton Willem KLERKS
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
PHOTOVOLTAIC ROADWAY ASSEMBLY
- Publication number 20200287502
- Publication date Sep 10, 2020
- NEDERLANDSE ORGANISATIE VOOR TOEGEPAST- NATUURWETENSCHAPPELIJK ONDERZOEK TNO
- Karl Everhardus SEWALT
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Sealing plug for sealing hollow flotation elements for use in a cov...
- Publication number 20060230512
- Publication date Oct 19, 2006
- Kees R. Kooijmans
- E04 - BUILDING