Chemistry: Electrical Current Producing Apparatus, Product, And Process Patents (Class 429)

Having polarity safety feature (Class 429/1)

Having living matter, e.g., microorganism, etc. (Class 429/2)

Having pulse feature (Class 429/3)

With sonic or ultrasonic feature (Class 429/4)

Radio active material containing (Class 429/5)

With pressure equalizing means for liquid immersion operation (Class 429/6)

With nonbattery electrical component electrically connected within cell casing other than testing or indicating components (Class 429/7)

Having disparate nonelectrical function (Class 429/8)

Having diverse cells or diverse removable cells in a support means (Class 429/9)

Having magnetic field feature (Class 429/10)

Current production dependent upon temperature differential between a pair of electrodes (Class 429/11)

Fuel cell, subcombination thereof, or method of making or operating (Class 429/400)

Having earth feature (Class 429/47)

Preserving cell in storage feature (Class 429/48)

Regenerating, salvage or repair feature other than only addition of electrolyte to cell or electrically charging per se (Class 429/49)

Process of cell operation (Class 429/50)

Means externally releasing internal gas pressure from closed cell, i.e., valve etc. (Class 429/53)

Sealed cell having gas prevention or elimation means (Class 429/57)

With control means responsive to battery condition sensing means (Class 429/61)

Terminal protector other than seal through casing (Class 429/65)

Having means to accommodate electrode expansion (Class 429/66)

Having movable mechanical means to provide relative motion between electrode and electrolyte (Class 429/67)

With system having means to move ventilating fluid (Class 429/71)

Having specified venting, feeding or circulation structure (other than feeding or filling for activating deferred action-type battery) (Class 429/72)

With measuring, testing, or indicating means (Class 429/90)

For charge or liquid level (Class 429/91)

Plural concentric or single coiled electrode (Class 429/94)

Having means for draining or removing electrolyte from a cell other than filler opening (Class 429/95)

Cell support for removable cell (Class 429/96)

Fluid active material or two-fluid electrolyte combination having areas of nonmixture (Class 429/101)

Deferred action type (Class 429/110)

With heat exchange feature (Class 429/120)

Adjuncts in combination with or for connection to an external electrical electric current carrying member of a battery other than terminal protectors, e.g., terminal adapter, caps, lifters, etc. and connectors per se (Class 429/121)

Current producing cell, elements, subcombinations and compositions for use therewith and adjuncts (Class 429/122)

Cross-Reference Art Collections

Fuel cell including means for power conditioning (e.g., conversion to ac, etc.) (Class 429/900)

Fuel cell including means for utilization of heat for unrelated application (e.g., heating a building, etc.) (Class 429/901)

Foreign Patent Art Collections

Class-related foreign documents (Class 429/FOR000)

Current producing cell, elements, subcombinations and compositions for use therewith and adjuncts

Include electrolyte chemically specified and method

Current producing cell, elements, subcombinations and compositions for use therewith and adjuncts (429/122)

Foreign Patent Art Collections

Fuel cell, subcombination thereof or methods of operating (429/12) (Class 429/FOR110)