Membership
Tour
Register
Log in
Derk van der Scheer
Follow
Person
Goor, NL
People
Overview
Industries
Organizations
People
Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Leaf spring system and an electric switch provided with such a leaf...
Patent number
5,006,681
Issue date
Apr 9, 1991
Holec Systemen en Componenten B.V.
Albert J. Postmus
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Electromagnetic switch
Patent number
4,935,711
Issue date
Jun 19, 1990
Holec Systemen En Componenten B.V.
Derk Van der Scheer
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Current-limiting device
Patent number
4,562,320
Issue date
Dec 31, 1985
Hazemeijer B.V.
Derk van der Scheer
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
End cap for an electric high voltage fuse
Patent number
4,542,364
Issue date
Sep 17, 1985
Hazemeijer B.V.
Derk van der Scheer
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Current limiting high voltage fuse assembly
Patent number
4,536,735
Issue date
Aug 20, 1985
Hazemeijer B.V.
Derk van der Scheer
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Selective safety device for the protection of a power distribution...
Patent number
4,354,215
Issue date
Oct 12, 1982
Hazemeijer B.V.
Derk van der Scheer
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Current limiting switch capable of rapid circuit breaking
Patent number
4,319,210
Issue date
Mar 9, 1982
Hazemeijer B.V.
Derk VAN DER Scheer
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Electromagnetic actuation device comprising a magnetic holding mech...
Patent number
4,172,241
Issue date
Oct 23, 1979
Hazemeijer B.V.
Hendrik A. Bosch
H01 - BASIC ELECTRIC ELEMENTS