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Inventions Jeopardy Words Answers

Joseph aspdin a bricklayer invented the portland variety of this substance

Inventions • Level 73

One of the inventions to come out of this company's labs in the 1970s was fiberoptics

Inventions • Level 119

If rowland hill hadn't come up with the idea for these philatelists would have nothing to collect

Inventions • Level 593

L. o. colvin devised a machine that did this farm chore but it annoyed the cows

Inventions • Level 1399

The nationality of the men who invented both the telescope & the compound microscope

Inventions • Level 1785

Roy j. plunkett was stuck into the national inventors hall of fame for this non-stick pan coating

Inventions • Level 2131

In 1975 sony introduced this videotape system for home use

Inventions • Level 2396