Inventor

MCDONALD DONALD C

3 patents

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

WALKER MAGNETICS GROUP INC

1 patent

US4044894AAug 30, 1977

Load tilting magnetic lift

WALKER MAGNETICS GROUP INC14 citations65

MCDONALD DONALD C

1 patent

US4370693AJan 25, 1983

Demagnetizing apparatus for a workpiece holding electromagnet

MCDONALD DONALD C9 citations64

WALKER O S CO INC

1 patent

US4020436AApr 26, 1977

Lifting magnet for layered pipe

WALKER O S CO INC1 citations39