DK40807C
(en )
1929-09-23
Method for Manufacturing and Attaching Conical Membranes to Speakers and the Like.
DK41918C
(en )
1930-03-24
Method and machine for attaching rims to plate wheels and the like.
FR614116A
(en )
1926-12-07
Resonance-free membrane
DK45366C
(en )
1932-03-07
Method for the production of dispersible and storage-resistant nitrophosphates.
DK52904C
(en )
1937-04-05
Membrane for Speakers and Apparatus for Manufacturing the same.
DK40851C
(en )
1929-09-30
Cone-shaped Membrane for Speakers and the like.
DK36368C
(en )
1926-08-16
Automatic Close to Tubes and the like.
FR641542A
(en )
1928-08-06
Improvement in telephone membranes
DK40659C
(en )
1929-08-19
Procedure for the manufacture of small boats, airplanes and the like.
DK34608C
(en )
1925-06-15
Device for Assembling Two Insulator Elements and Method for Manufacturing the Device.
DK39474C
(en )
1928-11-12
Adhesive and Procedure for Manufacturing the Same.
DK36997C
(en )
1927-01-03
Method of Making Mosaic Ornaments.
DK39339C
(en )
1928-10-08
Procedure for the Production of Cyanides.
DK47423C
(en )
1933-06-12
Method and Plant for the Production of Cellulose.
DK40343C
(en )
1929-06-24
Audio cone for Speakers.
DK40542C
(en )
1929-07-29
Kegle-type speaker.
DK35849C
(en )
1926-04-06
Procedure for Making Sound Records.
DK46350C
(en )
1932-10-24
Procedure and Device for Sucking Cellulose and the Like with Diluted Acids Under Pressure.
DK39985C
(en )
1929-04-02
Method for Manufacturing Remote Signal Cables with Reduced Cross Speech.
DK32251C
(en )
1923-09-10
Skate and Procedure for Making the Same.
DK41532C
(en )
1930-01-27
Procedure and Tools for the Production of Filed Works.
DK42991C
(en )
1930-09-15
Membrane for Cone Speakers.
DK47748C
(en )
1933-09-11
Procedure for Manufacturing Completely Matured Yeast and Apparatus for Carrying Out the Procedure.
DK38466C
(en )
1928-02-20
Hearing aid.
DK40924C
(en )
1929-10-14
Speaker with a conical diaphragm.