Resources Contact Us Home
Browse by Category: Main > Communications
Class Information
Number: 116/153
Name: Signals and indicators > Bells > Gong type > Door knob contained
Description: Devices in which the bell is placed within a hollow doorknob or itself forms the knob.

Patents under this class:

Patent Number Title Of Patent Date Issued
7623024 Adjustable door chime with interchangeable parts Nov. 24, 2009
6028504 Removable door chime Feb. 22, 2000
5914650 Removable door chime Jun. 22, 1999
4800833 Tubular door lock with a bell Jan. 31, 1989
4577584 Bell lock (II) Mar. 25, 1986

  Recently Added Patents
Methods and systems providing desktop search capability to software application
Multiple RF band operation in mobile devices
Internal wiring structure of semiconductor device
Wearable display device
JTAG multiplexer with clock/mode input, mode/clock input, and clock output
Systems and methods for simultaneously configuring multiple independent backups
Method and system for determining a suppression factor of a suppression system and a lithographic apparatus
  Randomly Featured Patents
Disc device
Process and device for reducing load change stresses in a motor vehicle
Method and apparatus for balanced pressure sampling
Pneumatic blind riveter with cascaded pistons
Hyperhemispherical field of view optical sensor head
Control process for the automatic closing of a convertible top of a motor vehicle
Tissue material process for forming bioprosthesis
Waste destruction
Non-transitory computer-readable record medium, game system and information processing device
Architectural material coating