CH274996A
(en )
1951-04-30
Electrode system in trochotrons.
CH278230A
(en )
1951-10-15
Device for cleaning polished surfaces, and in particular glass.
CH300338A
(en )
1954-07-31
Liquid detergent and cleaning agent.
ES17816Y
(en )
1949-03-01
Device for cleaning glasses and the like.
CH262624A
(en )
1949-07-15
Abrasive sponge.
FR978370A
(en )
1951-04-12
Instrument intended for cleaning, in particular windows and mirrors
CH281109A
(en )
1952-02-29
Detergents and cleaning agents.
CH266949A
(en )
1950-02-28
Grinding and polishing device.
ES16761Y
(en )
1948-07-01
Sharpening and polishing apparatus.
CH285551A
(en )
1952-09-15
Device for processing the surface of objects using glass fibers, in particular for polishing, cleaning, erasing, roughening, etc.
ES18637Y
(en )
1949-06-16
Perfected glasses.
ES17188Y
(en )
1949-01-01
Perfected glasses.
FR1007853A
(en )
1952-05-12
Grinding device intended, in particular, for grinding cereals
CH266693A
(en )
1950-02-15
Drive device with rotating cleaning tools.
CH267179A
(en )
1950-03-15
Infinitely adjustable drive.
CH271992A
(en )
1950-11-30
Glasses.
CH270950A
(en )
1950-09-30
Bottle stopper.
FR922499A
(en )
1947-06-10
Cleaning and polishing device
CH280617A
(en )
1952-01-31
Procedimento e dispositivo per convogliare in opera calcestruzzo o malta.
ES17098Y
(en )
1949-01-01
Device for placing glasses.
DK73270C
(en )
1951-10-22
Corundum abrasive.
AT174999B
(en )
1953-05-26
Abrasives and cleaning agents
ES184491A3
(en )
1948-12-01
AN IMPROVEMENT IN THE WINDOWS
ES199806A3
(en )
1953-09-16
NEW RELAY-SWITCH IN 6, 12, OR 24 VOLTS
CH288818A
(en )
1953-02-15
Grinding or lapping device.