Knots And Knot Tying Patents (Class 289)
Knots (Class 289/1.2)
Methods (Class 289/1.5)
Knotters (Class 289/2)
Macrame (Class 289/16.5)
Hand implements (Class 289/17)
Miscellaneous (Class 289/18.1)

Foreign Patent Art Collections

Class-related foreign documents (Class 289/FOR000)