Talk:Timeline of United States inventions (before 1890)

article has many mistakes
I think, there were some american wirters at work. 188.96.230.245 (talk) 17:05, 12 April 2013 (UTC)

Mistakes in article at: Gas mask
First gas masks in different kind are much older than the patent of Kentucky inventor, for example also in ancient time. And second the modern form and most important time of gas masks inventions were in World War I. 188.96.230.245 (talk) 18:23, 12 April 2013 (UTC)

Ironing board : not an American invention
Ironing boars have a longer history than patent from 1858. 188.96.230.245 (talk) 18:37, 12 April 2013 (UTC)

Dustpan: not an American invention
Dustpans were already earlier in use. 188.96.230.245 (talk) 19:15, 12 April 2013 (UTC)

Clothes hanger: not an American invention
Clothes hanger were already earlier over centuries in use in europe. 188.96.230.245 (talk) 19:17, 12 April 2013 (UTC)

Flexible flyer: not an American invention
Flexible flyers were already earlier over centuries in use in europe. 188.96.230.245 (talk) 20:20, 12 April 2013 (UTC)

Ballpoint pen: not an American invention
Ballpoint pen is an Hungary-Argentinian invention by inventor László Bíró 188.96.230.245 (talk) 22:43, 12 April 2013 (UTC)

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Musical instruments
This list appears to be missing many "traditional" American musical instruments, such as the banjo (originating historically in the African American community) and the Appalachian dulcimer (originating historically in the Scotch-Irish American community.--Pharos (talk) 17:25, 12 April 2016 (UTC)

External links modified
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Wrong: can openers use wheel with serrated edges in order to pierce
"Most non-electrical can openers today use the hand-cranked rotary version consisting of a wheel with serrated edges in order to pierce and cut the top of tin cans."

is incorrect,

The Star used a crank turning a wheel with serrated edges in order rotate the edge of the can with the pivoting lever pressing the cutting wheel against the outside of the can cylinder.

Most 21st Century non-electrical can openers used a crank turning a wheel with serrated edges (to grip and turn) and is fused with a cogwheel which rotates a cogwheel fused with a cutting wheel which presses against and penetrates the can top.

Check the patents.

24.7.104.84 (talk) 00:36, 27 January 2020 (UTC)