CH67286A
(en )
1914-11-16
Device for grinding and polishing precious stones
CH67287A
(en )
1914-11-16
Device for grinding and polishing precious stones
CH65392A
(en )
1914-06-16
Device for grinding diamonds
CH67284A
(en )
1914-11-16
Device for the production of doublets for holding precious stones in place during grinding or polishing
CH56191A
(en )
1912-10-01
Device for turning grinding stones
CH73219A
(en )
1916-09-01
Machine for grinding and polishing precious stones, especially diamonds
CH75480A
(en )
1917-08-01
Fine grinding tool for polishing lenses
CA162864A
(en )
1915-06-01
Apparatus for grinding and polishing precious stones
CH67285A
(en )
1914-11-16
Double for holding gemstones while grinding or polishing
CH67623A
(en )
1914-12-16
Device for grinding circular knives and similar rotary tools
CH58362A
(en )
1913-03-01
Device for cleaning and polishing footwear
CH58259A
(en )
1913-03-01
Machine for polishing pocket watch cases and parts thereof
CH62393A
(en )
1913-11-17
Device for polishing the track journals of balance wheels and other clock wheels
FR464389A
(en )
1914-03-19
Device for cutting and polishing precious stones
FR464390A
(en )
1914-03-19
Device for cutting and polishing precious stones
CH60469A
(en )
1913-07-16
Grinder for grinding sugar, almonds and the like
CH63507A
(en )
1914-02-02
Method and device for edging Solnhofen stone slabs
CH71301A
(en )
1915-12-16
Device for cleaning floors and beans
CH58731A
(en )
1913-04-01
Device for reaming or grinding bones and other hard materials
CH49162A
(en )
1911-01-16
Double insert for grinding diamonds
CH62297A
(en )
1913-11-17
Device for sharpening and cleaning knives and for cleaning forks
CA162863A
(en )
1915-06-01
Apparatus for polishing precious stones
CH40080A
(en )
1908-05-16
Hand grindstone for grinding lithography stones
CH53471A
(en )
1912-03-01
Apparatus for polishing gemstones
CH74874A
(en )
1917-05-01
Method and device for grinding glass and similar materials