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Patent:US676740

Patent:	US 676740
Titel:	Calculating or like scale
Datum:	18.03.1899
Ort:	Roma, Italien
Land:	USA
Person:	Farini, Placida
Firma:
Links im Rechnerlexikon:
Schlagworte:
Link zum Patentamt: (ohne Garantie)	US676740 (espacenet),  US676740 (uspto)

Letters Patent in the Kingdom of Italy, dated August 19, 1898, No. 49,015

The present invention relates to a triangular scale for drawing purposes which provides a means of graphically solving several geometrical problems of practical importance to engineers, architects, mathematicians, designers, students, and others.