Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Method of allocating IP address of image forming apparatus using DHCP, image forming apparatus and system of allocating IP address using DHCP
Toy vehicle housing
Resist composition and method for producing resist pattern
Panel for decoration
Semiconductor device and method for manufacturing the same
Spoofing detection for civilian GNSS signals
Polymers derived from benzobis(silolothiophene) and their use as organic semiconductors
  Randomly Featured Patents
Liquid fertilizer metering system
Waveguide circulators
Admixture for a hydraulic binder
Device and method for cooling an X-radiation detector
Cooled insulation surface temperature control system
Bending mechanism
Connector with changeable connecting manner
Coating composition
Image forming apparatus
Glycerol derivative