Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Harbey Hubbell, Incorporated Patents
Assignee:
Harbey Hubbell, Incorporated
Address:
Bridgeport, CT
No. of patents:
1
Patents:












Patent Number Title Of Patent Date Issued
4091431 Ground leakage relay circuit May 23, 1978
A ground leakage relay circuit including a core balance transformer through which pass the supply and return line of the circuit to be protected and having a multi-turn secondary winding. A capacitor is connected to be normally charged from a d.c. source. A normally conducting transistor

 
 
  Recently Added Patents
Method and apparatus for prioritizing data transfer
Vehicle speed verification system and method
Systems and methods for providing a video playlist
Method and apparatus for radio antenna frequency tuning
Configuration method and system of complex network and configuration and management module of server resources
Fixing apparatus
System and method for reducing antivirus false positives
  Randomly Featured Patents
Billiard/pool cue
Signal degradation monitoring
System and method for caller control of a distinctive ring
Wheel disc offset attachment to wheel rim
Anti-human mitochondrial adenylate kinase isozyme antibody, diagnostic formulation and diagnostic kit for cardiac disease
Transponder detector for an RFID system generating a progression of detection signals
Coated particles
Mercury pump
Image pickup system
Ferroelectric liquid crystal apparatus having negative dielectric anisotropy and colored film at non-pixel portions