Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Communications
Class Information
Number: 116/90
Name: Signals and indicators > Alarms > Burglar > Closure operated > Door and window > Gear and friction wheel
Description: Signals and alarms actuated by gear or friction wheels attached to the moving door or window and in contact with the floor or window frame.










Patents under this class:

Patent Number Title Of Patent Date Issued
4106427 Alarm system Aug. 15, 1978











 
 
  Recently Added Patents
Image erasing apparatus and recording medium conveying method for image erasing apparatus
Microwavable bag
Methods and apparatus for achieving multiple bit rates in passive optical networks
Encoding digital content based on models for predicting similarity between exemplars
Stable light source device
Method and apparatus for verifiable generation of public keys
Communication system including a switching section for switching a network route, controlling method and storage medium
  Randomly Featured Patents
Non-temper, confectionery fats
Composition for producing article simulating plantation crepe rubber
Method and apparatus for attaching connective tissues to bone using a suture anchoring device
Operations support systems and methods with power assurance
Bead structure for a pneumatic tire
Handle for calf-pulling chain
Method of determining the direction of application of gradient magnetic field for the detection of diffusive motion, method of measuring the diffusion coefficient, and MRI apparatus
Drive mechanism for reclining chairs
Steam generating device and washing machine having the same
Hair clipper