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United States Patent 2722727
US Patent References:
/0607545.html
- - 0607545
/0730038.html
- - 0730038
/1006109.html
- - 1006109
/1030386.html
- - 1030386
/1033531.html
- - 1033531
Inventors:
Scheifele, Frederick W.
Publication Date:
11/08/1955
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Download PDF 2722727
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Assignee:
Scheifele, Frederick W.
Primary Class:
403/374.200
International Classes:
A01K97/10
;
F16B2/10
;
F16B2/02
US Patent References:
1246492
1968462
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