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 and system for calibrating laser profiling systems
Multi-bank queuing architecture for higher bandwidth on-chip memory buffer
Systems and methods for excluding undesirable network transactions
Semiconductor device
Heating pad
Method of modified facies proportions upon history matching of a geological model
Methods of producing the membranes and the uses of membranes as battery separator films
  Randomly Featured Patents
Insensitive high energy booster propellant
Semiconductor device
Magnetic bearing control device having a three-phase converter, and use of a three-phase converter for controlling a magnetic bearing
Secure DHCP server
Suspension rail for a folder or binder of a flexible sheet material
Directive bar-type antenna
Extracting gas hydrates from marine sediments
Male fertility assay method and device
Internet advertising method and system using Web page
Catalyst-carrying metallic carrier and production method thereof