Indicating By Acoustic Means (at Preselected Times Subclass 229; By Electroacoustic Means Or Electroacoustic Time Indicating Subclass 582; Time Indicating By Means Other Than Acoustically, Or Combined Means Subclass 243; Time Indicating By Visual Means Subclass 139; Acoustic Signalling Arrangements G08b 3/00) [g04b 21/00] Patents (Class 968/217)
Cross-Reference Art Collections
- With saw mechanism [G04B 21/02B] (Class 968/220)
- With locking wheel [G04B 21/02C] (Class 968/222)
- Hour wheels; racks or rakes; snails or similar control mechanisms [G04B 21/04] (Class 968/223)
- Details of striking mechanisms, e.g., hammer, fan governor, etc. (escapements in general subclass 95; mechanisms for stabilizing frequency subclass 103; resistance regulators G05D 13/00; mechanical toys A63H) [G04B 21/06] (Class 968/224)
- Sounding bodies; whistles; musical apparatus (with electroacoustical transmitters subclass 580; sounding arrangements in alarm clocks subclass 237; cases with arrangements for enhancing sound production subclass 303; carillons and sounding boards G10F 1/08, 1/10, G10D 13/08) [G04B 21/08] (Class 968/225)
- Releasing or locking the regular stroke, e.g., for silence during the night, etc. [G04B 21/10] (Class 968/226)
- Reiterating watches or clocks [G04B 21/12] (Class 968/227)
- Winding up the striking mechanism by the clockwork; winding up the clockwork by the striking mechanism; winding up by hand or mechanically subclass 23) [G04B 21/14] (Class 968/228)
There are no patents to show for this class.
