Famous Patents
William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 5865192 | Self-haircutting guide apparatus A self-haircutting guide apparatus includes a flexible band for securing around a person's head and a haircutting guide which includes first and second ends. The guide is detachably mounted to the band at one of the first and second ends thereof and inclu... | 02/02/1999 |
| 4868988 | Self hair cutting device A self hair cutting or trimming device comprises an elongated handle housing an electric drive, the drive comprises an elongated spool mounted coil connected in series with a diode. An elongated core is mounted through the coil and connects a movable blad... | 09/26/1989 |
| 4651761 | Electric high comb-clipper This invention concerns about an electric hair comb-clipper. It mainly uses a magnetism generator which, by its two magnetic poles, changes the polar of the two poles when AC current is on, enabling the swing block with two poles to swing up and down forc... | 03/24/1987 |
