| Subject: | T, Perpetual motion, Bangerter, Friedrich, 1868-, Clocks and watches |
| Format: | Text |
| Date issued: | 2016 |
| Language: | English |
| Publisher: | Project Gutenberg, |
| Rights: | Public domain in the USA. |
| Download link: | Bangerter's Inventions; His Marvelous Time Clock [electronic resource] |