Apparatus for producing preselected time intervals for use as timing standards (generating clock signals for electric digital computers g06f 1/04; regulating frequency in general h03c, l) [g04f 5/00] > Metronomes (periodic signalization by acoustic signals in general subclass 218) [g04f 5/02] > Patents

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Class Information
Number: 968/818
Name: Horology > Apparatus for producing preselected time intervals for use as timing standards (generating clock signals for electric digital computers g06f 1/04; regulating frequency in general h03c, l) [g04f 5/00] > Metronomes (periodic signalization by acoustic signals in general subclass 218) [g04f 5/02]
Description:

Sub-classes under this class:

Class Number	Class Name	Patents
968/820	Electronic metronomes (rhythm generation for electrophonic musical instruments g10h 1/36) [g04f 5/02c]	34
968/819	Mechanic metronomes [g04f 5/02b]	2
968/821	Using electromechanical driving, e.g., of optical scanned recordings, etc. (electrophonic musical instruments in which tones are generated by electromechanical means, e.g., by using pickup means for reading recorded waves, etc. g10h 3/00) [g04f 5/02d]	1

Patents under this class:

Patent Number	Title Of Patent	Date Issued
4759253	Metronome	Jul. 26, 1988
4437381	Metronomic signalling devices and method of tempo signalling	Mar. 20, 1984
4333172	Metronome cartridge	Jun. 1, 1982
4218874	Electronic metronome	Aug. 26, 1980
4206682	Musical rhythm inductor	Jun. 10, 1980
4070944	Optical metronome	Jan. 31, 1978
4012901	Damage-resistant mechanical metronome	Mar. 22, 1977
3996833	Optical metronome	Dec. 14, 1976
3973251	Timing device for exercise program with signalling means	Aug. 3, 1976
3945292	Optical metronome	Mar. 23, 1976
3942404	Optical metronome with transparent sheet music	Mar. 9, 1976