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United States Patent 2959879
US Patent References:
/0679734.html
- - 0679734

/0837481.html
- - 0837481

/1320683.html
- - 1320683

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Inventors:
Joseph, Mazur
Publication Date:
11/15/1960
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Assignee:
Laurence, Austin
Albert, Greenstein
Henry, Bruder
Primary Class:
40/405
Other Classes:
40/373, 40/384, D19/90, 40/124.400, 40/124.200
International Classes:
B42F17/00
Foreign References:
FR707200A