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| | Class Definition for Class 42 - FIREARMS |
 | | The subclasses under this title, except those of the spring-motor guns, and the grip-magazine pistols, are based on the movements of the breechblock or barrel in opening the breech. |
 | | Firearms having a chamber which is movable relative to the barrel and surrounds or holds a cartridge or load in firing position, and which may be integral with, connected to, or separate from, the sliding breechblock. |
 | | Firearms having a chamber which is movable relative to the barrel and which surrounds or holds a cartridge or load in firing position, and which may be integral with, connected to, or separated from, the swinging breechblock. |
| www.uspto.gov /go/classification/uspc042/defs042.htm (2897 words) |
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