IP Library › Granted Patent US 6,011,470
Granted Patent Utility
US 6,011,470 · App. 09/117,971

Ultrasound keyboard protection

Inventors: Johannes Schulte, Oliver Liedtke
Patented Case View Patent ↗
Granted: Jan 4, 2000 Filed: Aug 7, 1998
Inventors
Johannes Schulte
Oliver Liedtke

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Quick Facts
Patent No.
US 6,011,470
App. No.
09/117,971
Filed
1998-08-07
Granted
2000-01-04
Kind
A