Steven R. Geist

Follow

Person

Portland, OR, US

People

Patents Grantslast 30 patents

Information Patent Grant
Audio transducer with controlled flexibility diaphragm
- Patent number 5,198,624
- Issue date Mar 30, 1993
- Linaeum Corporation
- Paul W. Paddock
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Audio transducer with controlled flexibility diaphragm
- Patent number 4,903,308
- Issue date Feb 20, 1990
- Linaeum Corporation
- Paul W. Paddock
- H04 - ELECTRIC COMMUNICATION TECHNIQUE