What specific, earlier invention did Lewis Temple invent in the 1850s?
Answer
A harpoon
The text makes a distinction between Martin's foundational security invention and the work of other innovators across different fields and times. Lewis Temple is noted specifically for inventing a harpoon in the 1850s. This serves as a historical point of contrast, placing his mechanical contribution outside the realm of residential or commercial security hardware, which was the focus of Martin’s 1889 patent.
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