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Class Information
Number: 37/DIG.18
Name: Excavating >
Description:

Sub-classes under this class:

Class Number	Class Name	Patents
37/104	Railway graders	128
37/142.5	Ditch filler	110
37/182	Orange-peel buckets	2
37/189	Rotary digger	133
37/195	Processes	175
37/196	Snow or ice removing or grooming by portable device	24
37/3	Peat excavators	10
37/300	Grave digger	7
37/301	Land clearer	41
37/304	Self-loading vehicle	18
37/307	Beneath a body of water (e.g., dredger)	40
37/347	Ditcher	48
37/381	Road grader-type	20
37/394	Cable-operated (e.g., dragline)	21
37/403	Combined or convertible	269
37/411	Scoop or excavating and transporting container	34
37/446	Digging edge	71
37/461	Clamshell bucket	27
37/462	Endless digger	30
37/466	Miscellaneous	78
37/901	Bucket cleaners	36
37/902	Hydraulic motors	13
37/903	Scoop or scraper attachments	172
37/904	Vibration means for excavating tool	83
37/905	Nondredge excavating by fluid contact or explosion	18
37/906	Visual aids and indicators for excavating tool	18
37/907	Automatic leveling excavators	51
37/908	Canal cleaners	6