Patent Application for 'Improvements in and Relating to Drills'
| Keywords | DePENNING DePENNING Stalker Drill Shank Cutting Length |
| Ministry/ Department/ Residency | PATENTS AND DESIGNS KOLKATA |
| Branch | Kolkata |
| From Year / Date (YYYY-MM-DD) |
1961 |
| To Year / Date (YYYY-MM-DD) |
1961 |
| Identifier | NAIBHF00005957 |
| File No./Reference No./Sheet No./Folio No. | 78682 |
| Location | BBSR-R1 |
| File Size | 28.2 MB |
| Pages | 18 |
| Language | English |
| Bundle Barcode | NAIBHB00000266 |
| File Barcode | NAIBHF00005957 |
| QC Certificate No. | QC_20240629BH |
| Bundle No. | 74 |
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