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
Cryptography on a simplified elliptical curve
Transparent zebrafish and preparation method thereof
Automated solar collector installation design including ability to define heterogeneous design preferences
LO generation with deskewed input oscillator signal
Method of manufacturing semiconductor devices using ion implantation
Analysis, secure access to, and transmission of array images
Retransmission and retransmission request in data communication systems
  Randomly Featured Patents
Tire tread
System and method utilizing a real time expert system for tool life prediction and tool wear diagnosis
Communication system and method to be performed in a communication system
Boundary scan cell and methods for integrating and operating the same
Strap for a sandal and the like
Methods for debugging a multiprocessor system
Milk amount measuring device for milking machines and the method for measuring the same
Blanket design for imploding liner systems
Lens driving control apparatus for zoom lens
Heat activated transfer for elastomeric materials