David J. Langrick

Follow

Person

Lubbenham, GB

People

Patents Grantslast 30 patents

Information Patent Grant
Method and device for measuring the viscosity of a fluid
- Patent number 4,905,503
- Issue date Mar 6, 1990
- Willett International Limited
- David J. Langrick
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Method and device for measuring the viscosity of an ink
- Patent number 4,856,322
- Issue date Aug 15, 1989
- Willett International Limited
- David J. Langrick
- G01 - MEASURING TESTING