US PATENT SUBCLASS 44 / 520
FUEL PRODUCT HAVING PASSAGEWAY FOR GAS

Current as of: June, 1999
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44 /   HD   FUEL AND RELATED COMPOSITIONS

520FUEL PRODUCT HAVING PASSAGEWAY FOR GAS {2}
521  DF  .~> Plural elements, with passageway unobstructed from side to opposite side
522  DF  .~> Single element having aperture

DEFINITION

Classification: 44/520

FUEL PRODUCT HAVING PASSAGE WAY FOR GAS:

(under the class definition) Product or process having a void space which is specified as being suitable for the passage or gas or vapor.

SEE OR SEARCH CLASS

149, Explosive and Thermic Compositions for Charges,

2+, for such subject matter under subclass 520 in which the fuel product comprises one integral fuel element attached to another element, the gas passageway extends from one side all the way through to an opposite side of the product, and no material obstructs the void.