Spring, Texas
United States
4
2013-11-07
The entities that hold a legal rights for patent applications filed by inventor DERR Charles W.:
Charles W. DERR from Spring, US has applied for patents for these inventions. The list has both pending applications and granted patents:
Temperature verification for ultrasonic flow meters
#2 | 2011-08-11Flow meter validation
#3 | 2010-01-14Method and system of detecting liquid in an acoustic flow meter
#4 | 2010-01-14System and method of an acoustic flow meter with dual flow measurements
517135 ⎘