Bizarre Patents
Pet Toilet-Like Water Disk and Food Storage
One pet-friendly inventor patented "a device for watering pets, e.g., a dog or cat." The device, he helpfully noted, "has the general shape of a toilet."
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| Number | Title | Issue Date |
| 4823379 | Telephone ringer A magnetically controlled steel ball armature functions as a clapper to strike a gong. A positionally adjustable permanent magnet polarizes the ball and positions it relative to the gong. An electromagnet modulates the magnetic field of the permanent magn... | 04/18/1989 |
