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United States Patent 2861370
Inventors:
Mcarthur, Donald W.
Publication Date:
11/25/1958
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Export Citation:
Assignee:
MIEHLE GOSS DEXTER INC
Primary Class:
International Classes:
G03B21/64; G03B21/54
Foreign References:
| GB366577A | ||||
| GB400098A | ||||
| FR1105010A |