CH219321A
(en )
1942-01-31
Device for viewing television images.
CH80941A
(en )
1919-10-01
Device for securing pictures etc. in their vertical hanging position
FR575607A
(en )
1924-08-02
double tau square for draftsmen
CH231804A
(en )
1944-04-15
Device for scanning films.
FR841823A
(en )
1939-05-31
Magnetic lens with asymmetric polar system
ES71837A1
(en )
1920-03-01
Improvements in teaching material for pedagogy.
CH72071A
(en )
1916-03-16
Device for holding strips provided with inscriptions
FR554133A
(en )
1923-06-05
Special alphabet for telephoto messages
FR621590A
(en )
1927-05-13
Drive system for gyroscopes
ES70805A1
(en )
1919-10-16
Improvements in the neck clips.
ES66283A1
(en )
1918-03-01
Improvements introduced in the cards.
DK28921C
(en )
1921-12-05
Shaking system.
FR495177A
(en )
1919-10-01
Letter card
ES72775A1
(en )
1920-05-10
Improved means of obtaining stereoscopic effects in the projection of paintings or photographs.
DK27143C
(en )
1921-01-31
Apparatus for Placing the Bottom in Margarine Containers.
FR573412A
(en )
1924-06-23
Automatic locator for map or plan
ES76596A1
(en )
1921-02-16
Improvements in the cylindrical seals "Mauser system".
ES76267A1
(en )
1921-02-01
Improvements in the procedure to separate liquids and solids.
DK26202C
(en )
1920-06-28
Support device for the Types in Type Boxes.
AT80070B
(en )
1920-02-25
Impact device for making briquettes. Impact device for making briquettes.
CH82869A
(en )
1919-11-01
Device for securing money slot slots, mailbox slots and the like
ES123410A1
(en )
1931-08-01
Electrical system tachymeter perfected.
DK71977C
(en )
1951-01-08
Hanging folder for vertical registration.
ES67461A1
(en )
1918-08-16
Improvement in the Roman ones.
ES145351A1
(en )
1941-05-16
Improvements in the system units for radiotelephone devices.