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Patent:US2509718

Patent:	US 2509718
Titel:	Electric calculator for studying correlative variations of quantities interconnectedby a system of mathematical relations forming a double e
Datum:	30.05.1950
Ort:
Land:	USA
Person:	Marie Barbey Raymond Alphonse
Firma:
Links im Rechnerlexikon:
Schlagworte:
Link zum Patentamt: (ohne Garantie)	US2509718 (espacenet),  US2509718 (uspto)

Aus der Patentschrift US2509718

• DATUM: 30.05.1950
• TITEL: Electric calculator for studying correlative variations of quantities interconnectedby a system of mathematical relations forming a double entry chart
• Patent Family: ( Patent:CH253045, Patent:FR992866, Patent:GB600795, Patent:US2509718 )