Patent drawing - Patent pierwszego wiecznego pióra z 1884 r. Lewis Edson Waterman. Public domain image
Summary
Polski: Patent pierwszego wiecznego pióra z 1884 r. Lewis Edson Waterman.
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Tags
patent drawings
drawings of cross sections
technical drawings
united states patent drawings
waterman fountain pens
inventions
Date
1884
Source
USPTO
Link
Copyright info
public domain