Patent Application for Improved Pumping Methods and Apparatus
| Keywords | DePENNING pumping spiral tube ribbon apparatus rotation |
| Ministry/ Department/ Residency | PATENTS AND DISGNS KOLKATA |
| Branch | Kolkata |
| From Year / Date (YYYY-MM-DD) |
1961 |
| To Year / Date (YYYY-MM-DD) |
1961 |
| Identifier | NAIBHF00004087 |
| File No./Reference No./Sheet No./Folio No. | 76703 |
| Location | BBSR-R1 |
| File Size | 22.9 MB |
| Pages | 14 |
| Collection | Public Records |
| Language | English |
| Bundle Barcode | NAIBHB00000227 |
| File Barcode | NAIBHF00004087 |
| QC Certificate No. | QC_20240625BH |
| Bundle No. | 35 |
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