DK44568C
(en )
1931-09-07
Procedure for Making Tone Film.
DK42838C
(en )
1930-08-25
Procedure for Making Tone Films.
DK38789C
(en )
1928-05-21
Procedure for Making Cinematographic Color Films.
DK47916C
(en )
1933-10-23
Procedure for Making Resitols.
DK46616C
(en )
1932-12-12
Procedure for Making Tone Films.
DK38277C
(en )
1927-12-27
Procedure for Making Durable Diazocopy Paper.
DK37070C
(en )
1927-01-31
Procedure for Making Soap.
DK37985C
(en )
1927-09-26
Procedure for Telephone Music Transfer.
AT110347B
(en )
1928-08-10
Lens shutter.
DK45236C
(en )
1932-02-15
Procedure for Making Diazo Copies.
DK35651C
(en )
1926-02-22
Film Production Procedure.
DK37285C
(en )
1927-03-28
Baandmaal til Maaling af Svin.
DK40816C
(en )
1929-09-23
Procedure for Making Cardboard Matches.
DK40345C
(en )
1929-06-24
Procedure for Making Soap.
DK35849C
(en )
1926-04-06
Procedure for Making Sound Records.
DK37714C
(en )
1927-07-11
Procedure for Manufacturing Insulating Paper.
DK39256C
(en )
1928-09-17
Procedure for the manufacture of inoculants.
DK42908C
(en )
1930-09-08
Procedure for the production of clichés.
DK33004C
(en )
1924-03-24
Procedure for the manufacture of paper and the like.
DK38549C
(en )
1928-03-12
Procedure for the Production of Dioxyacetone.
DK38779C
(en )
1928-05-21
Procedure for the Production of Arsenobenzols.
DK38207C
(en )
1927-12-05
Procedure for Making Soft Potassium Soap.
DK47287C
(en )
1933-05-01
Procedure for Making Resitols.
DK32210C
(en )
1923-09-03
Procedure for Making Color Photographs.
DK38074C
(en )
1927-10-24
Procedure for Making Artificial Marble.