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Drafting room methods (1918)

Collins, Charles Dickey, 1872- (from old catalog) · New York, D. Van Nostrand company · leaf 85

An illustration from Drafting room methods, 1918, leaf 85
/u^^^^^^ Typical Patent Office Drawing 82 DRAFTING ROOIM METHODS (Ko Model.) „ . ^«..,„^ 2 Sheets-Sheet 3. W. A. COLLINS. DREDGINa BUCKET. No. 572,651. Patented Dec. 8, 1896.

Drawing-room practice · Mechanical drawing

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