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United States Patent 1777261

Inventors:
Edward, Grainger James
Gerrard, Dixon Wentworth
Montague, Shadbolt Samuel
Publication Date:
09/30/1930
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Assignee:
Edward, Grainger James
Gerrard, Dixon Wentworth
Montague, Shadbolt Samuel
Primary Class:
251/210
Other Classes:
251/121
International Classes:
F16K29/00