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Laws requiring county-of-origin labels seem to have been a response to German industrialization and protectionism. According to a report by the U.S. International Trade Commission: Country-of-origin marking laws were first enacted in the 1880s in various European countries* to distinguish imported goods (particularly German goods) from domestic ...


The earliest I could find was by a John R. Norris in 1957 for a radio earpiece: There are a lot of behind-the-ear headphone/microphone combos, but that's not quite what you're asking about. The first dedicated behind-the-ear headphone I found was Simeon Schreiber's 1988 "Bone Conduction Audio Listening Device and Method": But importantly, the first patent ...

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