Stone Working Patents (Class 125)
Miscellaneous (Class 125/1)
Dressing (Class 125/2)
Planing (Class 125/9)
Turning (Class 125/10)
Sawing (Class 125/12)
Splitting, shearing, and punching (Class 125/23.01)
Slate surfacing (Class 125/25)
Brick cleaning (Class 125/26)
Millstone dressing (Class 125/27)
Precious stone working (Class 125/30.01)
Work supports (Class 125/35)
Tools (Class 125/36)

Cross-Reference Art Collections

Forming piezoelectric crystals (Class 125/901)

Foreign Patent Art Collections

Class-related foreign documents (Class 125/FOR000)