CH79041A
(en )
1918-10-01
Method and machine for producing roof shingles
AT91033B
(en )
1923-01-25
Process and machine for the production of reinforced concrete pipes and beams.
CH78751A
(en )
1918-09-02
Method and machine for making trenches
CH86573A
(en )
1920-09-01
Process for the production of gravure forms.
CH80964A
(en )
1919-09-16
Process for the production of high percentage solutions of calcium nitrate
CH81893A
(en )
1919-08-01
Method of making embroidery
CH88567A
(en )
1921-03-01
Process for the production of trinitroresorzin.
AT100191B
(en )
1925-06-10
Process for preparing gels.
AT87482B
(en )
1922-02-25
Process for the production of asbestos slate and the like.
CH70939A
(en )
1915-11-16
Method and machine for the production of mosaic panels
CH76586A
(en )
1918-01-16
Process for the production of cork boards
CH82059A
(en )
1919-08-16
Process for the production of leather substitutes
CH82104A
(en )
1919-09-01
Process for the production of oak imitations
AT96138B
(en )
1924-02-25
Process for the production of fuel.
CH77761A
(en )
1918-05-16
Method and device for shredding sticks and for producing sticks
CH82062A
(en )
1919-08-16
Process for the production of leather substitutes
CH78530A
(en )
1918-08-01
Method of making aerial embroidery
AT82952B
(en )
1921-02-25
Process for creating chains.
CH72366A
(en )
1916-10-16
Process for the production of tops
CH81317A
(en )
1919-06-02
Process for the production of leather
CH79342A
(en )
1919-03-17
Process for the production of artificial leather
CH79811A
(en )
1919-01-16
Process for the production of artificial leather
CH79491A
(en )
1918-12-02
Process for the production of copper oxide
AT88456B
(en )
1922-05-10
Process for the production of perylene.
AT87355B
(en )
1922-02-25
Process for the production of scythe workpieces.