CH73219A
(en )
1916-09-01
Machine for grinding and polishing precious stones, especially diamonds
CH67286A
(en )
1914-11-16
Device for grinding and polishing precious stones
CH67287A
(en )
1914-11-16
Device for grinding and polishing precious stones
CH75480A
(en )
1917-08-01
Fine grinding tool for polishing lenses
CH67536A
(en )
1915-02-16
Machine for working stones, iron and the like
CH67285A
(en )
1914-11-16
Double for holding gemstones while grinding or polishing
CH50035A
(en )
1911-04-17
Machine for mixing sand and stone chips
CH70656A
(en )
1915-10-16
Machine for the automatic polishing of gemstones
CH40080A
(en )
1908-05-16
Hand grindstone for grinding lithography stones
CH64919A
(en )
1914-05-01
Machine for grinding almonds, chocolate and the like.
CH58259A
(en )
1913-03-01
Machine for polishing pocket watch cases and parts thereof
FR476452A
(en )
1915-08-05
Machine for cutting or polishing gems or precious stones
CH46177A
(en )
1910-02-01
Machine for grinding and grinding grain
CH67623A
(en )
1914-12-16
Device for grinding circular knives and similar rotary tools
CH69996A
(en )
1915-08-16
Machine for sharpening and honing knife blades for security devices
CH49162A
(en )
1911-01-16
Double insert for grinding diamonds
CH75572A
(en )
1917-08-16
Machine for grinding band knives
CH59950A
(en )
1913-06-16
Machine for automatic grinding of flat surfaces, especially lithographic stones
CH65392A
(en )
1914-06-16
Device for grinding diamonds
CH53044A
(en )
1912-01-16
Machine for cleaning and sharpening knives
FR482750A
(en )
1917-04-20
Precious stone cutting or polishing machine
CH57586A
(en )
1913-01-16
Machine for cutting and grinding knife bands
FR487163A
(en )
1918-06-12
Machine for polishing precious, semi-precious or synthetic stones or imitations of these stones, and for giving these stones the shine
AT73513B
(en )
1917-07-10
Machine for cleaning, sanding, polishing and beaning parquet floors and other surfaces.
GB190412687A
(en )
1904-09-01
Improvements in Apparatus for Sawing, Dressing and Polishing Stone and the like.