P

Inventor

ZHANG QIANMEI

US5 patents
⚠️ This page may combine multiple inventors who share the name “ZHANG QIANMEI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

ZHANG QIANMEI

3 patents

MOLZ ERIC B

1 patent

CARBO CERAMICS INC

1 patent