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Apparatus for Transmitting Sound-Waves
Patent for transmitting sound waves by magnetic induction and to "furnish an apparatus by which these different vibrations can be heard at the receiving end" (lines 20-22). Includes descriptions and illustrations.
Date:
October 17, 1911
Creator:
Harvey, Fred Brown
Object Type:
Patent
System:
The Portal to Texas History
[Postcard from L. H. Woods to George Pendexter, October 13, 1910]
Postcard from L. H. Woods to George Pendexter wishing for more cards to be sent showing "auto fire apparatus." The photograph on the reverse side of the card shows a large cloud of smoke coming off of a large building that has been burned. The building on the left has had its roof destroyed and some portions of its wall collapsed; the building in the foreground has had its walls damaged and roof destroyed as well.
Date:
October 13, 1910
Creator:
Woods, L. H.
Object Type:
Postcard
System:
The Portal to Texas History