AEG Elfa-Rechner, ready reckoner for direct and al

Made:
1965-1975 in Raciborz

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AEG Elfa-Rechner, ready reckoner for direct and alternating current, cardboard, patented by Franz Lindner, Ratibor (= Raciborz, Poland)

Details

Category:
Mathematics
Object Number:
1990-703
type:
ready reckoner (electrical engineering)
credit:
Auction Team Koln
status:
Permanent collection

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