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United States Patent 3426433

Inventors:
Anderson, Harvey B.
Publication Date:
02/11/1969
View Patent Images:
Assignee:
Harvey, Anderson B.
Primary Class:
Other Classes:
359/511
International Classes:
F41G1/38; F41G1/00; F41G1/38; G03B11/04; F41G1/42
Foreign References:
DE317188C
GB190701151A




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