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What year was Fountain Pen invented and how?
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When and who invented the Spectacles (or eyeglasses)?
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When and who invented the Transistor?
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Which company is ahead in Arc Lamp innovations?
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Which company is ahead in Record (long-playing) innovations?
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Who invented the Telephone?
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What year was Margarine invented and how?
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When and who invented the Silk Manufacture?
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Who invented the Ship (sea-going)?
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When and who invented the Rayon?
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What year was Clock (pendulum) invented and how?
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Who invented the Washing Machine (electric)?
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What year was Microphone invented and how?
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Who discover Fluroine?
Anonymous User asked 7 years ago
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852 views
Who invented the Bullet?
Anonymous User asked 7 years ago
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What year was Windmill invented and how?
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What year was Film (musical) invented and how?
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What year was Laws of Gravitation and Motion invented and how?
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What year was Atom Bomb invented and how?
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846 views
When and who invented the Zip Fastener?
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751 views
Who invented the Ship (steam)?
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736 views
What year was Food Frozen invented and how?
Anonymous User asked 7 years ago
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724 views
Which company is ahead in Razor (Electric) innovations?
Anonymous User asked 7 years ago
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Who invented the Chain Drive?
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Who invented the Electronic Computer?
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Which company is ahead in Aspirin innovations?
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What year was Safety Pin invented and how?
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What year was Steel Production invented and how?
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789 views
What year was Fluroine invented and how?
Anonymous User asked 7 years ago
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Who invented the Automobile (steam)?
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Who invented the Glass (stained)?
Anonymous User asked 7 years ago
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772 views
Who invented the Match (Safety)?
Anonymous User asked 7 years ago
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