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Crapper, however, did much to increase the popularity of the flush toilet and introduced several innovations in the late 19th century, holding nine patents, including one for the floating ballcock. [417] A 230-volt incandescent light bulb. Thomas Edison did not invent the light bulb. [418]
Here is the test. Three scoring systems are in use, called points, Eliteness, and RC. A bubble like this - (1) gives points, if it says Eliteness or RC, it gives Eliteness or RC.