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
Generation of interpolated samples for decision based decoding
Automated solar collector installation design including ability to define heterogeneous design preferences
Battery cell separator
Liquid crystal shutter glasses
MOS resistor apparatus and methods
Playlist search device, playlist search method and program
Method for producing organo-oligo silsesquioxanes
  Randomly Featured Patents
Quinone diazide compound and light-sensitive composition containing same
Imide polymers
Biodegradable, water-resistant polymer material
Material for and method of preparing water-repellent coatings on optical substrates
Organic light emitting display apparatus and method of driving the same
Operating guidance system for medical equipment
Injection molding of long fiber reinforced thermoplastics
Insulating container
Group of icons for a display screen
Silsesquioxane resins