ORIGINAL PATENT APPLICATION NUMBER 6,485 FOR IMPROVEMENTS IN OR RELATING TO TELEPHONE SYSTEMS (STOCKHOLM).

Name: ORIGINAL PATENT APPLICATION NUMBER 6,485 FOR IMPROVEMENTS IN OR RELATING TO TELEPHONE SYSTEMS (STOCKHOLM).
Author: Henrik Thore. Cedergren
ISBN: 978B001DXSMV1

Author Henrik Thore. Cedergren

Publisher HMSO

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Book Details

Author(s) Henrik Thore. Cedergren

Publisher HMSO

ISBN / ASIN B001DXSMVC

ISBN-13 978B001DXSMV1

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