Bizarre Patents
A helium-filled sun shade for protecting individuals engaged in outdoor activities.
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 |
| 4800612 | Vacuum power booster with automatic waste liquid discharge for a water vacuum extraction apparatus A vacuum power booster with automatic waste liquid discharge for a water vacuum extraction apparatus. A first vacuum source is coupled to a first waste liquid storage tank in a main housing, typically vehicle mounted. A second, auxilliary vacuum source is... | 01/31/1989 |
