invention
| Topic | Replies | Views | Activity | |
|---|---|---|---|---|
| Inventions and attempted inventions |
|
2 | 121 | 14 March 2024 |
| Make It Sew—the Inventors and Inventions behind the Sewing Machine |
|
1 | 148 | 25 November 2023 |
| Three-Phase Power: Nikola Tesla v. Mikhail Dolivo-Dobrovolsky |
|
4 | 544 | 1 December 2022 |
| Who Invented the Mouse “Snap Trap”? |
|
1 | 262 | 5 April 2022 |