AT139806B
(en )
1934-12-10
Process for the continuous grinding and polishing of glass plates.
CH200958A
(en )
1938-11-15
Process for treating glass fibers.
FR719478A
(en )
1932-02-05
Grinding process
CH154019A
(en )
1932-04-15
Device for jerking off and polishing floors and the like.
CH209603A
(en )
1940-04-30
Method and device for hardening glass plates and other glass objects.
FR711791A
(en )
1931-09-17
Apparatus for the automatic treatment of surfaces by grinding, polishing and the like
FR718923A
(en )
1932-01-30
Apparatus for finishing concrete surfaces
FR704576A
(en )
1931-05-22
Improved method and apparatus for working the edges of glass sheets
AT121402B
(en )
1931-02-25
Device for rough grinding and polishing of diamonds.
AT140833B
(en )
1935-02-25
Process for making crucibles and furnace stoves
FR40027E
(en )
1932-03-21
Portable machine for sanding, polishing and similar operations
FR729309A
(en )
1932-07-21
Grinding wheel
FR732190A
(en )
1932-09-14
Grinding wheel
FR761538A
(en )
1934-03-21
Method and devices for grinding rails
FR715688A
(en )
1931-12-07
Method of grinding taps and the like
CA9788S
(en )
1932-10-21
Sharpening stone
FR718992A
(en )
1932-01-30
Advanced grinding wheel
CA311560A
(en )
1931-05-19
Apparatus for grinding and polishing glass plates
CA327568A
(en )
1932-11-15
Stone sculpturing apparatus
ES126469A1
(en )
1932-06-01
Continuous process of rectification and polishing of glass plates.
CA322197A
(en )
1932-05-10
Ore treating apparatus
CA323108A
(en )
1932-06-07
Fluid treating apparatus
CA321274A
(en )
1932-04-05
Continuous glass grinding and polishing apparatus
FR596546A
(en )
1925-10-26
Polishing machine for polishing the rough edges of glass hollow bodies
FR752684A
(en )
1933-09-28
Process for refreshing damaged or worn sandstone surfaces