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Stamp pads
United States Patent 2847972
US Patent References:
/0204726.html
- - 0204726
/0340761.html
- - 0340761
Self-inking stamp pad
- - 1538241
Ink pad
- - 2152682
Variable electrical resistor
- - 2375178
Inventors:
Rosenthal, Sidney N.
Publication Date:
08/19/1958
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Download PDF 2847972
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Assignee:
Rosenthal, Sidney N.
Primary Class:
118/265
Other Classes:
427/256
International Classes:
B41K1/54
;
B41K1/00