Inductive coupling
United States Patent 2432982

Inventors:
Braddon, Frederick D.
Lanty, Loren DE. J.
Esval, Orland E.
Publication Date:
12/23/1947
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Assignee:
SPERRY GYROSCOPE CO INC
Primary Class:
336/83
Other Classes:
310/72, 310/68D, 336/123, 336/120, 310/49R, 336/212, 191/10, 310/90
International Classes:
H01F38/18; H01F38/00
US Patent References:
2049232Device for indicating magnetic directions
1394901
2313682Compass system
2283940Welding apparatus
Foreign References:
DE658259C