Albert Bujan of Abbott Labs
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A butterfly needle can be left in the arm while other blood is been taking. This is very small needle.
How was the BONE NEEDLE invented?
Butterfly needles come in several gauges - 21, 23, and 25-gauge.
The first carburetor butterfly valve was invented by Carl Benz in 1893.
No-one invented the butterfly, but a combination of a moth and catapiller gave it, the fact it first looks like a catapiler, then turns into a butterfly .
Butterfly needles
The astatic needle was created by Leopoldo Nobili in 1825.
1456
Scotland
1834
bob wormanhiemer