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# brochure in public relations
# When was the calculator invented?
# When was the hoisting machine invented?
# When was the printer invented?
# When was the moving machine invented?
# How was the television invented?
# When was the Internet invented?
# When was the computer invented?
# When was the mobile phone invented?
# How was the computer invented?
# How was the telephone invented?
# How was the lamp invented?
# When was the light bulb invented?
# How was the mobile invented?
# When was television invented?
# In what year was the telephone invented?
# In what year was Facebook invented?
# Where was the matchstick invented?
# When were elevator buttons invented?
# When was Portland cement invented?
