Title:
Microscopic capsules containing magnetizable material
United States Patent 2971916
US Patent References:
Paste of paramagnetic particles for use in the examination of paramagnetic materials for flaws by the magnetic method
- - 2106882
Remedial pill
- - 2671451
Method for making sheet or web material
- - 2680079
Manifold record material
- - 2730456
Pressure responsive record materials
- - 2730457
Paste of paramagnetic particles for use in the examination of paramagnetic materials for flaws by the magnetic method
- - 2106882
Remedial pill
- - 2671451
Method for making sheet or web material
- - 2680079
Manifold record material
- - 2730456
Pressure responsive record materials
- - 2730457
Inventors:
Lowell, Schleicher
Baughman, Charles S.
Baughman, Charles S.
Publication Date:
02/14/1961
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Export Citation:
Assignee:
NCR CO
Primary Class:
Other Classes:
428/407, 346/135.100, 346/74.600, 324/214, 101/DIG.037
International Classes:
B01J13/10; B41M5/165; G03G9/083; G03G9/093; G03G19/00; H01F1/44; B01J13/06
US Patent References:
| 2800457 | Oil-containing microscopic capsules and method of making them |