FR668849A - Barre de havage - Google Patents
Barre de havageInfo
- Publication number
- FR668849A FR668849A FR668849DA FR668849A FR 668849 A FR668849 A FR 668849A FR 668849D A FR668849D A FR 668849DA FR 668849 A FR668849 A FR 668849A
- Authority
- FR
- France
- Prior art keywords
- cutting bar
- cutting
- bar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
- E21C25/06—Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate
- E21C25/10—Rods; Drums
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE668849X | 1928-02-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR668849A true FR668849A (fr) | 1929-11-07 |
Family
ID=3877387
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR668849D Expired FR668849A (fr) | 1928-02-14 | 1929-02-01 | Barre de havage |
Country Status (2)
Country | Link |
---|---|
BE (1) | BE348858A (ja) |
FR (1) | FR668849A (ja) |
-
0
- BE BE348858D patent/BE348858A/xx unknown
-
1929
- 1929-02-01 FR FR668849D patent/FR668849A/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
BE348858A (ja) |
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