Title:
Microscopic capsules containing magnetizable material
United States Patent 2971916


Inventors:
Lowell, Schleicher
Baughman, Charles S.
Application Number:
US63727057A
Publication Date:
02/14/1961
Filing Date:
01/30/1957
Assignee:
NCR CO
Primary Class:
Other Classes:
101/DIG.37, 324/214, 346/74.6, 346/135.1, 428/407
International Classes:
B01J13/10; B41M5/165; G03G9/083; G03G9/093; G03G19/00; H01F1/44
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