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)
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
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)