関連ワード:  safety pin inventor name    invention of safety pin  
結果 : safety pin inventor name

-
1:24

Did you know who invented safety pins? / only genius know this

Mirchi Bits
3,087 回視聴 - 3 年前
10:27

The Surprisingly Interesting Story Behind the Invention of the Safety Pin

Origins
7,072 回視聴 - 1 年前

-
1:31

The Story of America's Most Forgotten Inventor

Stuff of Genius - HowStuffWorks
15,679 回視聴 - 11 年前
1:10

How Safety Pin was Invented

TECH CONFIG
20 回視聴 - 1 年前
4:42

Inventors and Inventions ||Top 25 Inventors and Their Inventions ||Inventors &Inventions in English

JP Study Corner
456,536 回視聴 - 3 年前

-
1:03

Who invented the safety pin?

Knowledge & Fun
403 回視聴 - 11 年前
5:09

安全ピンの発明の裏話

BADAL PAUL
3,480 回視聴 - 7 年前
4:20

Inventors and their Inventions for kids | Scientist name and their invention

Kids Channel - Learn with Fun
2,673 回視聴 - 1 年前
2:22

AK-47のしくみ

Matt Rittman
233,453,051 回視聴 - 6 年前
3:00

Just Put Super Glue on the Led Bulb and you will be amazed

Inventor 101
12,789,995 回視聴 - 1 年前
27:17

機械設計技術 強度計算のやり方とInventor構造解析を比較　Compare strength calculation method and Inventor structural analysis

機械設計CADの学校
43,406 回視聴 - 3 年前

-
6:02

Super Glue and Baking soda! Pour Glue on Baking soda and Amaze With Results

Inventor 101
11,206,655 回視聴 - 1 年前