| 摘要 |
In combination with a keyboard, a keyboard dust cover comprising a housing containing a spring-loaded roller, the housing being attached to a first wall of the keyboard, a sheet having a first edge attached to the roller, and a mechanism for securing the sheet in an extended position over the keyboard. Also, a keyboard dust cover comprising a housing containing a spring-loaded roller, a sheet having a first edge attached to the roller, and a mechanism for securing the sheet in an extended position over a keyboard.
|
