HS

Harry L. Spears

📍 Houston, TX: #2,881 of 21,073 inventorsTop 15%
🗺 Texas: #18,864 of 125,132 inventorsTop 20%
Overall (All Time): #665,885 of 4,157,543Top 20%
8
Patents All Time

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
6283148 Standing valve with a curved fin Allen A. Pennington 2001-09-04
5382142 Wall pump having backwash valve actuator 1995-01-17
5086802 Safety check valve 1992-02-11
4848454 Downhole tool for use with a ball and seat traveling valve for a fluid pump 1989-07-18
4599054 Travelling valve assembly for a fluid pump 1986-07-08
4531896 Fluid pump 1985-07-30
4504199 Fluid pump 1985-03-12
4332533 Fluid pump 1982-06-01