Class 91 Motors: Expansible Chamber Type... Patent Classification Definitions... Patent And Trademark Office... U.S. Dept. Of Commerce... December 1996

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Class 91 Motors: Expansible Chamber Type... Patent Classification Definitions... Patent And Trademark Office... U.S. Dept. Of Commerce... June 1997

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Class 92 Expansible Chamber Devices... Patent Classification Definitions... Patent And Trademark Office... U.S. Dept. Of Commerce... December 1996

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CLASS 92 EXPANSIBLE CHAMBER DEVICES... PATENT CLASSIFICATION DEFINITIONS... U.S. DEPT. OF COMMERCE - PATENT AND TRADEMARK OFFICE... JUNE 1

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Class 92 Expansible Chamber Devices... Patent Classification Definitions... Patent And Trademark Office... U.S. Dept. Of Commerce... June 1997

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Class 92 - Expansible Chamber Devices, Patent Classification Definitions, U.S. Dept. Of Commerce - Patent And Trademark Office, June 2000

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Class 227 Elongated-Member-Driving Apparatus... Patent Classification Definitions... Patent And Trademark Office... U.S. Dept. Of Commerce... December 1996

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Class 291 Track Sanders... Patent Classification Definitions... Patent And Trademark Office... U.S. Dept. Of Commerce.. December 1996

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Class 79 Button Making... Patent Classification Definitions... Patent And Trademark Office... U.S. Dept. Of Commerce... December 1996

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Class 271 Sheet Feeding Or Delivering... Patent Classification Definitions... Patent And Trademark Office... U.S. Dept. Of Commerce... December 1996

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