United States Patent 3441383
Inventors:
Moore, Francis C.
Perkinson, Leon R.
Publication Date:
04/29/1969
Assignee:
Francis, Moore C.
Leon, Perkinson R.
Other Classes:
356/246, 206/519, 206/564, 206/459.500, 206/558, 422/942, 73/864.910
International Classes:
B01L3/00; G01N21/03; G01N35/04; B01L3/00