Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Publication of BE443858ApublicationCriticalpatent/BE443858A/xx
H04B15/00—Suppression or limitation of noise or interference
H04B15/005—Reducing noise, e.g. humm, from the supply
D—TEXTILES; PAPER
D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
D—TEXTILES; PAPER
D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
D02G1/04—Devices for imparting false twist
D02G1/08—Rollers or other friction causing elements
H—ELECTRICITY
H03—ELECTRONIC CIRCUITRY
H03F—AMPLIFIERS
H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements