Inventor

ZIEMKE ROBERT A

US5 patents

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

WALKER RICHARD E

1 patent

US4455941AJun 26, 1984

Detonating cord and continuity verification system

WALKER RICHARD E36 citations90

RES ENERGY OF OHIO INC

1 patent

US4403143ASep 6, 1983

Detonating cord and continuity verification system

RES ENERGY OF OHIO INC36 citations88

DAN MAR

1 patent

US4152703AMay 1, 1979

Homing device

DAN MAR14 citations67

DAN MAR CO INC

1 patent

US4188621AFeb 12, 1980

Alarm system

DAN MAR CO INC8 citations66

HECKELMAN JAMES D

1 patent

US4318005AMar 2, 1982

Digital anti-theft locking circuit

HECKELMAN JAMES D3 citations58