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mar 31, 1958 - C-4 patented by Phillips Petroleum Company

Description:

Phillips Petroleum Company patented C-4, which was a plastic explosive used both in every conflict following.

Added to timeline:

CH 345 - Polymer Themed

ByMitch Amoriello

19 Apr 2021

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636

Date:

mar 31, 1958

Now

~ 67 years ago

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