H04Q

Technology

Watch

Stats

Description

SELECTING (switches, relays, selectors H01H; wireless communication networks H04W)

Subclasses

SubclassTitle
1/00 Details of selecting apparatus or arrangements
1/02 Details of selecting apparatus or arrangements Constructional details
1/04 Details of selecting apparatus or arrangements Constructional details Frames or mounting racks for selector switches; Accessories therefor, e.g. frame cover
1/06 Details of selecting apparatus or arrangements Constructional details Cable ducts or mountings specially adapted for exchange installations
1/08 Details of selecting apparatus or arrangements Constructional details Frames or mounting racks for relays; Accessories therefor
1/10 Details of selecting apparatus or arrangements Constructional details Exchange station construction
1/12 Details of selecting apparatus or arrangements Constructional details Arrangements of multiple bars with or without pivotable frames
1/14 Details of selecting apparatus or arrangements Constructional details Distribution frames
1/16 Details of selecting apparatus or arrangements Constructional details Wiring arrangements for selector switches or relays in frames
1/18 Details of selecting apparatus or arrangements Electrical details
1/20 Details of selecting apparatus or arrangements Electrical details Testing circuits or apparatus; Circuits or apparatus for detecting, indicating, or signalling faults or troubles
1/22 Details of selecting apparatus or arrangements Electrical details Testing circuits or apparatus; Circuits or apparatus for detecting, indicating, or signalling faults or troubles Automatic arrangements
1/24 Details of selecting apparatus or arrangements Electrical details Testing circuits or apparatus; Circuits or apparatus for detecting, indicating, or signalling faults or troubles Automatic arrangements for connection devices
1/26 Details of selecting apparatus or arrangements Electrical details Testing circuits or apparatus; Circuits or apparatus for detecting, indicating, or signalling faults or troubles Automatic arrangements for signalling trouble in unoccupied sub-exchanges
1/28 Details of selecting apparatus or arrangements Electrical details Current-supply circuits or arrangements for selection equipment at exchanges
1/30 Details of selecting apparatus or arrangements Electrical details Signalling arrangements; Manipulation of signalling currents (multiplex systems providing for calling or supervisory signals H04J 1/14, H04J 3/12 )
1/32 Details of selecting apparatus or arrangements Electrical details Signalling arrangements; Manipulation of signalling currents (multiplex systems providing for calling or supervisory signals H04J 1/14, H04J 3/12 ) using trains of dc pulses (H04Q 1/39 takes precedence)
1/34 Details of selecting apparatus or arrangements Electrical details Signalling arrangements; Manipulation of signalling currents (multiplex systems providing for calling or supervisory signals H04J 1/14, H04J 3/12 ) using trains of dc pulses (H04Q 1/39 takes precedence) Impulse regenerators with mechanical or other non-electrical marking arrangements
1/36 Details of selecting apparatus or arrangements Electrical details Signalling arrangements; Manipulation of signalling currents (multiplex systems providing for calling or supervisory signals H04J 1/14, H04J 3/12 ) using trains of dc pulses (H04Q 1/39 takes precedence) Pulse-correcting arrangements, e.g. for reducing effects due to interference
1/38 Details of selecting apparatus or arrangements Electrical details Signalling arrangements; Manipulation of signalling currents (multiplex systems providing for calling or supervisory signals H04J 1/14, H04J 3/12 ) using combinations of direct currents of different amplitudes or polarities over line conductors or combination of line conductors

more results

Recent Patents

Not Available

Recent Publications

Not Available

Top Owners in This Class

Upgrade to the Professional Level to view Top Owners for this Class.Learn More

Applications Filed in This Class - By Year

Patents Issued To Date - By Filing Year

Average Time to Issuance