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modern polygraph machine was invented by John Larson in 1921.
This is an example of communication technology -
Scotch Tape was invented
This is an example of manufacturing tecnology -
The Aerosol can was invented
This is an example of chemical technology
Plan projects on a visual timeline
Map milestones, phases, deadlines, and key events in one place so the sequence is easier to see and share. Timetoast is a timeline maker for work, school, research, and stories.