Microwave energy attenuating wall
United States Patent 2870439

Inventors:
Stinehelfer, Harold E.
Publication Date:
01/20/1959
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Assignee:
WESTERN UNION TELEGRAPH CO
Primary Class:
342/4
Other Classes:
333/81B, 174/388, 333/22R, 174/384, 333/81R
International Classes:
H01Q17/00
US Patent References:
2599944Absorbent body for electromagnetic waves
2610250Electromagnetic-wave energyabsorbing material
2656535Nonreflecting background for testing microwave equipment