Patent Application for Improved Earphone with Different Frequency Response
| Keywords | HOSHANG CHARNA ENAMELLED WIRE S.W.G. PATENT COIL AUDIO CURRENT |
| Ministry/ Department/ Residency | PATENTS AND DISGNS KOLKATA |
| Branch | Kolkata |
| From Year / Date (YYYY-MM-DD) |
1961 |
| To Year / Date (YYYY-MM-DD) |
1961 |
| Source Organization | NA |
| Identifier | NAIBHF00003797 |
| File No./Reference No./Sheet No./Folio No. | 76407 |
| Location | BBSR-R1 |
| Part No. | NA |
| File Size | 20.1 MB |
| Pages | 13 |
| Collection | Public Records |
| Call Number | NA |
| Publisher | NA |
| Subject | NA |
| Creator | NA |
| Accession Number | NA |
| Series | NA |
| Year of Publication | NA |
| Language | English |
| Bundle Barcode | NAIBHB00000221 |
| Location Code | NA |
| File Barcode | NAIBHF00003797 |
| QC Certificate No. | QC_20240625BH |
| Bundle No. | 29 |
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