US Patent Class 37-- EXCAVATING-- MAIN HEADINGS

US Patent Class 37
EXCAVATING-- Main Headings

		CLASS NOTES
300	DF	GRAVE DIGGER
301	DF	LAND CLEARER {2}
3	DF	PEAT EXCAVATORS
196	DF	SNOW OR ICE REMOVING OR GROOMING BY PORTABLE DEVICE {16}
304	DF	SELF-LOADING VEHICLE {2}
307	DF	BENEATH A BODY OF WATER (E.G., DREDGER) {11}
347	DF	DITCHER {8}
104	DF	RAILWAY GRADERS {1}
381	DF	ROAD GRADER-TYPE {7}
394	DF	CABLE-OPERATED (E.G., DRAGLINE) {3}
403	DF	COMBINED OR CONVERTIBLE {5}
411	DF	SCOOP OR EXCAVATING AND TRANSPORTING CONTAINER {7}
446	DF	DIGGING EDGE {7}
142.5	DF	DITCH FILLER
182	DF	ORANGE-PEEL BUCKETS
461	DF	CLAMSHELL BUCKET {4}
189	DF	ROTARY DIGGER {1}
462	DF	ENDLESS DIGGER {2}
195	DF	PROCESSES
466	DF	MISCELLANEOUS
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		CROSS-REFERENCE ART COLLECTIONS
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901	DF	Bucket cleaners
902	DF	Hydraulic motors
903	DF	Scoop or scraper attachments
904	DF	Vibration means for excavating tool
905	DF	Nondredge excavating by fluid contact or explosion
906	DF	Visual aids and indicators for excavating tool
907	DF	Automatic leveling excavators
908	DF	Canal cleaners