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Patent classifications
E
FIXED CONSTRUCTIONS
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E01
CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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E01H
STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING; OR PREVENTING; FOG IN GENERAL; CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
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5/00
Removing snow or ice from roads or like surfaces; Grading or roughening snow or ice
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E01H5/12
Apparatus or implements specially adapted for breaking, disintegrating, or loosening layers of ice or hard snow; with or without clearing or removing; ; Roughening ice or hard snow by means of tools
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