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United States Patent 2503413
US Patent References:
/1226231.html
- - 1226231
/1268867.html
- - 1268867
/D150030.html
- - D150030
Inventors:
Ressinger, Paul M.
Publication Date:
04/11/1950
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Download PDF 2503413
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Assignee:
Ressinger, Paul M.
Primary Class:
211/135
Other Classes:
248/174, 211/72
International Classes:
A47F5/00
Foreign References:
AU106796B