AT217401B - Schwerstange - Google Patents
SchwerstangeInfo
- Publication number
- AT217401B AT217401B AT159860A AT159860A AT217401B AT 217401 B AT217401 B AT 217401B AT 159860 A AT159860 A AT 159860A AT 159860 A AT159860 A AT 159860A AT 217401 B AT217401 B AT 217401B
- Authority
- AT
- Austria
- Prior art keywords
- drill collar
- drill
- collar
- Prior art date
Links
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US217401XA | 1959-03-04 | 1959-03-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT217401B true AT217401B (de) | 1961-10-10 |
Family
ID=21805870
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT159860A AT217401B (de) | 1959-03-04 | 1960-03-01 | Schwerstange |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT217401B (de) |
-
1960
- 1960-03-01 AT AT159860A patent/AT217401B/de active
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