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| Selected Product: | ORIGINAL PATENT APPLICATION NUMBER 13,643 FOR IMPROVEMENTS IN AND CONNECTED WITH SIGNALS IN TELEPHONIC EXCHANGE (LONDON)., ISBN:B001BX97PE |  | |  | | | | | no picture available | Quick Price Check:
Make selection below | | | Binding: Hardcover Release Date: 1904 | ISBN-10: B001BX97PE Author: Hermann. Oppenheimer Publisher: HMSO | | |  | |  | | |
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