CH67285A
(en )
1914-11-16
Double for holding gemstones while grinding or polishing
CH75480A
(en )
1917-08-01
Fine grinding tool for polishing lenses
CH49162A
(en )
1911-01-16
Double insert for grinding diamonds
CH70656A
(en )
1915-10-16
Machine for the automatic polishing of gemstones
CH65392A
(en )
1914-06-16
Device for grinding diamonds
CH74876A
(en )
1917-04-16
Machine for grinding the edge of glass panes
CH67284A
(en )
1914-11-16
Device for the production of doublets for holding precious stones in place during grinding or polishing
CH67286A
(en )
1914-11-16
Device for grinding and polishing precious stones
CH67287A
(en )
1914-11-16
Device for grinding and polishing precious stones
CH58259A
(en )
1913-03-01
Machine for polishing pocket watch cases and parts thereof
CH71704A
(en )
1916-02-01
Shearer for sharpening pencils
CH73219A
(en )
1916-09-01
Machine for grinding and polishing precious stones, especially diamonds
CH59950A
(en )
1913-06-16
Machine for automatic grinding of flat surfaces, especially lithographic stones
CH60469A
(en )
1913-07-16
Grinder for grinding sugar, almonds and the like
CH58731A
(en )
1913-04-01
Device for reaming or grinding bones and other hard materials
CH62402A
(en )
1913-11-17
Cleaning, grinding and polishing machine for woodworking
CA162863A
(en )
1915-06-01
Apparatus for polishing precious stones
CH67624A
(en )
1914-12-16
Grinding machine
AT74482B
(en )
1918-08-10
Machine for grinding the profiles of gears.
CH69429A
(en )
1915-06-16
Machine for washing gravel or the like
CH75572A
(en )
1917-08-16
Machine for grinding band knives
FR457318A
(en )
1913-09-16
Multi-piece grinding wheel
CA152481A
(en )
1913-12-16
Sharpener for grind stones
FR453772A
(en )
1913-06-16
Cylinder grinding and polishing machine
CH65176A
(en )
1914-05-16
Swiveling twist drill grinding support