Flash light MCQs App | Inventions e-Book PDF Download
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The MCQ: In which one of the following year, flashlight was patented; "Flash light" App Download [Free] with answers: 1877, 1899, 1844, and 1873 for online elementary school classes. Solve Inventions and Inventors Quiz Questions, download Apple Book (Free Sample) for school certificate.
In which one of the following year, flashlight was patented?
The first flashlight was invented by
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