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Material Science
Class Information
Number:
299/91
Name:
Mining or in situ disintegration of hard material
>
Description:
Sub-classes under this class:
Class Number
Class Name
Patents
299/1.05
Automatic control; signaling or indicating
49
299/10
Processes
77
299/19
Mine layouts
125
299/2
Tunnel recovery of fluid material
259
299/20
Expansible breaking-down devices
13
299/24
Ice-working devices
21
299/29
Hard material disintegrating machines
10
299/3
In situ conversion of solid to fluid
18
299/7
With separation of materials
54
299/79.1
Cutter tooth or tooth head
32
299/95
Miscellaneous
27
Patents under this class:
Patent Number
Title Of Patent
Date Issued
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