United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 397
being permanentlyopen to the megaphone with flexible ear 80tubes connected to said ear horns and earpieces connected to said ear tubes, withmeans for holding the ear pieces in engage-ment with the ears of the wearer, substan-tially as described. 85 In testimony whereof, I affix my signa-ture, in… … -4 ^i5 .J— /^..2.
Phonograph · Patents
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