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� [Narrator] Other
inventors have experimented with using belts or steel tracks to keep heavy
machinery from sinking, but none have been successful
inventors have experimented with using belts or steel tracks to keep heavy
machinery from sinking, but none have been successful
Full Transcript
00:00:01.000 --> 00:00:02.626
‐ [Narrator] Other
inventors have experimented
00:00:02.071 --> 00:00:05.546
with using belts or steel tracks
00:00:05.629 --> 00:00:07.798
to keep heavy
machinery from sinking,
00:00:07.882 --> 00:00:10.551
but none have been successful.
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Movie Summary
The stories behind innovations such as TV, radio, phones, airplanes, motorcycles and power tools as well as the inventors including Nikola Tesla, William Harley, Alexander Graham Bell, Duncan Black and Alonzo Decker.