Ferdinand Hubert Franciscus Gerardus Spierings

Follow

Person

Wageningen, NL

People

Patents Grantslast 30 patents

Information Patent Grant
Method of making a long narrow opening in a layer of electrically c...
- Patent number 4,971,741
- Issue date Nov 20, 1990
- Ferdinand H. F. G. Spierings
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of making a line-shaped opening in a coating on a plastics foil
- Patent number 4,225,633
- Issue date Sep 30, 1980
- Ferdinand H. F. G. Spierings
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Hall-voltage device
- Patent number 3,970,922
- Issue date Jul 20, 1976
- Ferdinand Hubert Franciscus Gerardus Spierings
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Hall-voltage device
- Patent number 3,967,144
- Issue date Jun 29, 1976
- Ferdinand Hubert Franciscus Gerardus Spierings
- G01 - MEASURING TESTING