Inventor

LERWILL WILLIAM E

3 patents

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

SEISMOGRAPH SERVICE CORP

2 patents

US4222455ASep 16, 1980

Vibration generators

SEISMOGRAPH SERVICE CORP24 citations77

US4500978AFeb 19, 1985

Seismographic method and apparatus using scaled sound sources

SEISMOGRAPH SERVICE CORP11 citations70

BIRD JAMES M

1 patent

US4463825AAug 7, 1984

Method and apparatus for generation of acoustic energy

BIRD JAMES M23 citations76