Did You Know...
...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
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| Number | Title | Issue Date |
| 7536800 | Chalk line apparatus and method of operating a chalk line apparatus A chalk line apparatus having a housing defining a chalk chamber and a reel for a flexible line mounted for rotation within the chamber. The chalk line apparatus further includes a collection space that communicates with the chamber through a housing opening. A flex... | 05/26/2009 |
| 7536799 | Chalk line apparatus with strategically located chalk fill opening A chalk line apparatus having a housing defining a chamber for a supply of chalk. A reel is mounted within the chamber for rotation around an axis. The housing has an opening through which a flexible line is directed from the reel to outwardly of the housing, for us... | 05/26/2009 |
| 7478484 | Chalk line apparatus with a spool configured to avoid cavitation A chalk line apparatus having a housing defining a chamber within which a supply of chalk can be stored and a reel within the chamber and mounted for rotation relative to the housing around a first axis. The housing has an opening through which a flexible line emana... | 01/20/2009 |
| 7197831 | Closure system for a fill opening on a chalk line reel housing A chalk line reel having a housing and a closure assembly. The housing has a storage space for a supply of chalk and a spool around which a supply of flexible line can be wrapped. The housing further has a wall with a fill opening therethrough in communication with ... | 04/03/2007 |
